什么是生物实验变量?

自变量是单一变量,就是其他的条件不变,只有一个条件变,该条件是自变量,不变量就是一直不变的条件.

常数：（数学名词）固定不变的数值。如圆的周长和直径的比值(π)约为3.1416﹑铁的膨胀系数为0.000012等。常数是具有一定含义的名称，用于代替数字或字符串，其值从不改变。变量：变数或变量，是指没有固定的值，可以改变的数。变量以非数字的符号来表达，一般用拉丁字母。变量与常数是相反的。

1、大厅里挤满了南来北往的旅客。2、我们通过一封封南来北往的信，送去对方最需要的关怀，思念，安慰和祝福。3、生活就像兜圈圈，兜完一圈又一圈，南来北往，米字路口，N个方向。4、南来北往的人、东西相向的车、似乎都与我无关。5、走到路上,看到南来北往的人群,无不悲哉,这个城市如此冷漠。6、在这个交通要道上,每天南来北往,东奔西走的行人、车辆络绎不绝。7、远看大桥就像升浮在云空里一样，南来北往的列车飞驰而过，那车灯，那笛声，都仿佛在半空中。近看，你还会发现，这里有绿色的、蓝色的、紫色的好看极了，好似天上银河落长江。8、春节期间,郑州火车站南来北往的人们熙熙攘攘,摩肩接踵。

My name is XXX, X years old this year, I grow not how beautiful, but I have a pair of clear God has big eyes, black hair, I am tall, an oval face, a pair of slender hands. My personality is very outgoing, but I very timid, I most afraid of a person at night to go to sleep. But I am very polite. My hobby is very widespread: like the Internet, read a book, painting, singing, dancing, swimming, also like to make friends!

这件事情难道只能是今天完成，不能是明天吗？

　　英语作文作为在英语学习中重要的组成部分,与自身的英语成绩息息相关,优秀的作文质量能够有效的将自身的卷面成绩往上提升。我精心收集了50字的英语作文带翻译，供大家欣赏学习! 　　50字的英语作文带翻译篇1 　　Iu2019m looking forward to the coming of my winter holiday. In order to have a good time in the vacation, I have made a plan for it. At first, my mother must ask me to do homework. If I donu2019t follow her words, I wouldnu2019t have peace in the following days until I finish my homework. So the first thing I will do in the winter holiday is to finish my homework. And then I will take full use of my time to go out play with my friends, because I will have to help my mother to prepare for the Spring Festival when itu2019s in the corner. Three days before Spring Festival, I will go to my grandmotheru2019s home for a visit with my parents. After the Spring Festival I am going to travel with my family. As for where to go, I donu2019t have any plan now. Maybe we will go to Harbin to the snow. Being the southern local person, I have never seen snow and eager to see it once. After the trip, I think I have to go back to school. This is my plan for the coming winter vacation. Whatu2019s yours? 　　我期待寒假的到来。为了过一个愉快的假期，我制定了一个寒假计划。首先，我的妈妈肯定会叫我去写作业的。如果我不听她的话，在接下来的日子里我就不会过得安宁，除非我完成了作业。所以寒假里我要做的第一件事就是完成我的作业。然后我会充分利用我的时间去和我的朋友玩，因为在春节即将到来的时候我要帮我妈妈准备春节的事情。春节前三天，我会和爸爸妈妈去外婆家。春节后我打算与我的家人去旅行。至于去哪里，我还没有计划。也许为了看雪我们会去哈尔滨。作为南方本地人，我从未见过雪，很希望能看一次。旅行之后，我想我也该准备回学校了。这是我即将到来的假期计划。你的是什么呢? 　　50字的英语作文带翻译篇2 　　The winter holiday is coming. I expect it very much, because the Spring Festival is the most important event in the holiday. First, I will relax myself. This term I work very hard, so during the holiday, I want to have fun. My families will go back to the hometown. We will get together to celebrate the Spring Festival. I like families getting together and organizing various activities. Itu2019s funny and warm. Of course, study canu2019t be ignored. After the festival, I will spend some time on my study. There will be exercises for the holiday. And I will do some reviews for next term. Math is my weakness, so I must work hard to improve it. This is my plan for winter holiday. 　　寒假即将来临。我很期待它的到来，因为春节是这个假期最重要的节日。首先，我会放松一下自己。这个学期我学习很努力，所以假期期间我想玩玩。我的家人会回老家过节，我们将一起庆祝春节。我喜欢家人团聚在一起组织各种各样的活动，有趣而又温暖。当然，学习也是不容忽视的。春节过后，我会花些时间在学习上。我会完成一些寒假作业然后预习一些下学期的内容。数学是我的弱项，因此我必须努力提高它。这就是我的寒假计划。 　　50字的英语作文带翻译篇3 　　How time flies,unconsciously the next winter vacation will soon come.In order to improve myself as well as enjoy a happy holiday,I made the winter vacation plan. 　　时间过得真快，不知不觉得下一个寒假就要到了，为了提高我自己同时快乐的度过假期，我制定了寒假计划。 　　Firstly i want to continue with my study,i think study is a life process,so no matter what the situation I am in,i will look for chances to continue it.I have bought several new books ,including those books on my major(专业)and some novels ,I will try to finish reading them in the holiday and write notes. 　　首先，我会继续学习，我认为学习是一种终身的过程，所以不管我处在那种情况之下，我都会寻找机会学习。我已经买了一些新书，这些书有的跟我的专业有关，也包括一些小说。我将努力读完他们并写下读书笔记。 　　Secondly,since it is the holiday,I will share it with my family and friends .You know the spring festival will soon come, I believe I would chatting and play games with my friends and family .I think I will enjoy the vacation. 　　其次，既然是放假，我将和我的家人朋友一起度过，你知道春节就要来临了，届时我会和我的家人朋友一起聊天啊，玩游戏啊等等，我相信我定会度过一个快乐的假期。

1、The little boy ran off to get his brother.这个小男孩跑去找他的哥哥。2、We ran into port for supplies.我们驶进港口装补给品.3、I can"t make this machine run properly.我无法使这部机器正常运转。5、He has no idea of how to run a business.他不知如何经商。5、This is unsustainable, in the long run.从长期来看，这是不可持续的。6、The monsoon will run to the end of the next month.雨季会持续到下个月底。扩展资料词汇用法——1、run的基本意思是“跑”“移动”,指人、动物或车辆以一定速度前进或移动,引申可表示“(使)流动”,指水流、血液或眼泪比较湍急、源源不断地在一段时间内流淌。2、run主要用作不及物动词,也可用作及物动词。用作及物动词时,接名词、代词或由that引导的从句作宾语,有时还可接双宾语,其间接宾语可转化成介词to或for的宾语。3、run还可用作系动词,意思是“用”“达到”“变得”,常接形容词作表语。用于比赛时可接序数词,表示“跑第几名”。

　　在英语教学中,英语作文的写作是教学的重点和难点。下面是我为你整理的十篇初二英语作文50字，希望你喜欢! 　　初二英语作文50字篇1 　　My teacher is Miss Li.She is my favorite teacher.She"s tall,slim and very smart.Her favorite colour is blue.Shee likes reading and travelling when shee was free.Besides,she is helpful and patient as she"s always ready to help people who got in trouble.She ever won the first prize in the teaching competition 　　初二英语作文50字篇2 　　Latern festival is one of my favorite festivals.My parents always take me to grandma"s home to spend some time with them.We eat dumplings together and we always have a great time!and in this Year"s Lantern Festival,i also went to my grandparents" home.It seemed that they are happy to see me.then we went out to have a great meal.it was really cool! 　　初二英语作文50字篇3 　　Hello!I"m Amy.I have a good friend.Her name is ZhangYun.Her English name is Betty. She is a Chinese girl. She is ten years old.She is in the No.5 Primary school. She is in Class 7,Grade 2. She is good at English.She likes Chinese ,too.She is kind and very friendly. She likes helping others. She likes singing and playing basketball.This is my good friend.Do you want to know more? 　　初二英语作文50字篇4 　　I always like doing housework when i am free in weekends.And On saturday this week,I washed my clothes and shoes.I am really fond of doing it because i feel happy when i put myself in busy.And i did cook some dishes.And my parents enjoy it very much.They said it was delicious and i was happy. 　　初二英语作文50字篇5 　　A new year ,a new start, when I stand on the edge of the a new year, I can"t help thinking about my plan of next year. Just as the old saying:“Well began is the half of the success.”So I decide that I should be at work while the others are still relaxing ,and then ,at the beginning ,I"m quicker than the others and of course I will get better result than the others. But ,what I really decide to do is that I must make good of anytime I can spare though it seems impossible. While, I will do my best to live up with what I have planned, and the result will prove it. 　　初二英语作文50字篇6 　　I have a good friend. Her name is Wu Mi.She is thirteen years old,But she is short.She has big eyes,a small mouth,a small nose and a round face.It is very cute.She likes reading books and do manually.Her skillful hands,can make a pleasant surprise.I like her very much,because we are good friends. 　　初二英语作文50字篇7 　　When I grow up , I want to be a doctor.everything starts with a dream , so you need to have a dream .The most important thing in your life is to have a dream .I want to be somebody someday .When l was a small girl I was very weak.Once I was a terribly ill, I had a high fever.A good doctor can save people"s lives.From then on l decided to be a doctor. 　　初二英语作文50字篇8 　　Times fly! At the same time that i"m growing,i"m getting into the most important year of my middle school time. Although we will be wery busy,and wery tired.Although i haven"t been ready for it.Although there may be an lot of probloms waiting for me in the last year.I"m not afraid.I will try my best to face all the problems and have a meanful year.Besides,i would care about my healthy to study better. So just let the gread three come. 　　初二英语作文50字篇9 　　My mother is very tired after works of all day.So I decided to help my mother to do some housework.First,I washed the dishes.After do that I swept the floor.then,i poor the rabbish. Did all of that,I thought my mum will be very happy.when i was thought that,mum was coming,she was very suprising for my behavior.then i wash the bowls.mum was very happy.i kown that i did very well. 　　初二英语作文50字篇10 　　As time goes by, i am a Class 2 student. i have changed a lot. first, i have become more outgoing.i begin to like communicating with teachers and my classmates. second, i become cleverer. i can work out many problems that others can not. it is surprising. third, the clothes that i buy become more mature. i am not a child any more.

　　英语写作在英语学习中起着至关重要的作用，也因此提高学生的写作能力越来越受到广大教师的重视。下面我为大家搜集整理有关四年级的小学英语作文，希望可以帮助到大家!　　小学英语作文：My dream job 　　When I grow up, I"m going to do what I want to do. I"m going to move somewhere interesting. Paris sounds like a city that I could that enjoy. There are lots of art exhibitions there. I want to be an artist . So how am I going to do it? First, I"mgoing to find a part-time job for a year or tow and save some money. Then I"m going to be a student at an art school in Paris. 　　优秀英语作文：Birthday 　　My birthday is on Sunday. My parents are going to have a birthday party at home. I invite my friends to come to the party. At the party. They give me many small presents. Such as cards, picture books, pens. They sing Happy Birthday to me. My mother makes a big cake for me. I cut the cake into small pieces and give them out. we sing and dance. We have a good time at the party. 　　小学四年级英语作文：What is success 　　What is success?It is what everyone is longing for.Sometimes success would be rather simple. 　　What is success? Different people hold views on This question. Some think that one is successful if he can make a great deal of money. Others argue that success means holding an important government post. 　　四年级英语作文：My Little Rabbits 　　One day, my mother bought two little rabbits for me. Iu2019m very happy. 　　From that on, the two little rabbits became my good friends. They have two little ears, red eyes, with white and fat boby. Theyu2019re marvellous. 　　Everyday, they play with each other happily. One day, I couldnu2019t find them. I asked my mother: ”Where are they? ” My mother told me that She didnu2019t know. At last, I found them in the grass. They were very dirty. I was angry, but when I looked at their lovely faces, I was happy again. 　　I love my little rabbits, and they love me. They are my good friends forever. 　　小学生英语范文：Sky in my hometown 　　When I was very young ,the sky in my hometown was nice and beautiful, the sky was very blue,and the air was fresh. There were some birds singing ,and there were many trees in the fields. I often played with my friends in the open air.I liked it. 　　Now the people are rich ,but the sky in my homerown isn"t blue .the trees were cut down , and there aren"t many birds. And the air isn"t fresher than before. The rubbish is put here and there, it was bad for our health.So wo must do something to protect the environment. If we make a contribution to protecting the environment,the sky will become much more beautiful.　　猜你喜欢： 1. 关于My room英语作文50字范文 2. my travel英语作文50字 3. my best friend英语作文50字 4. 四年级英语作文大全 5. 我的爱好英语作文50字

看不懂吗U0001f60a？？？？？？？？？？？？？？？？？？。。。？？？？。。，？？！！！！！！

　　小学的 英语 作文 怎么写呢?大家不妨先从50字的 小学英语作文 练起。下面是我精心挑选的，50字的小学英语作文，供大家阅读。 　　小学的英语作文50字一 　　I went go to the Fu jian xiao men four years ago.It"s a good place,so many people stay at there.I like that xiamen gu lang yu. 　　So romantic place it is.When you see the xiao men,you should be go to the gu langyu and xiao men university.It looks like a beautiful place. 　　And almost person will like it. 　　小学的英语作文50字二 　　My birthday Today is my birthday.Many friends give me a lot of gifts.I was very happy. 　　Had some rabbilt save money tin,some watercups,some movie tickets.We are the good friends,and have a fun day today. 　　小学的英语作文50字三 　　I went go to the Fu jian xiao men four years ago.It"s a good place,so many people stay at there.I like that xiamen gu lang yu. 　　So romantic place it is. 　　When you see the xiao men,you should be go to the gu langyu and xiao men university.It looks like a beautiful place. 　　And almost person will like it. 　　小学的英语作文50字四 　　The day after yesterday I received 200yuan from my relatives as my pocket money. 　　I was so happy but my father and mother said that I should give a half to them and the rest would be my pocket money in one year. “what!” I shouted. 　　小学的英语作文50字五 　　Tomorrow is New Yearu2019s Day, my family have had a completely cleaning for two days. 　　Then my father and I decorated our flat and my mother cooked delicious food for our meal. 　　After supper we watched TV program. How happy we were! 　　小学的英语作文50字六 　　Get up early today is very hot, hot feeling uncomfortable. Breakfast mother let me accompany her to go shopping and I didn"t go. Because it is too hot, move feeling on the finger to sweat. 　　The city library to read a book this afternoon. Because the library have air conditioning can blow, but also more than books at home too. 　　Conveniently checked total solar eclipse was visible material. 　　小学的英语作文50字七 　　Today my parents took me to my grandfatheru2019s house. 　　I played with my cousin. Suddenly my cousin suggested going to the park and having a rest. 　　“thatu2019s a good idea.” 　　I said. Then we prepared for the traveling. After lunch, the sky turned dark. After that , it rained heavily. It meant our plan is impossible. What a pity day!小学英语作文50字相关推荐： 1. 关于四年级英语作文50词 2. 四年级英语作文50词 3. 我的家人英语作文50字范文4篇 4. 关于四年级英语作文50字 5. travei plan的小学英语作文50字

l never play the piano ．

Hi！（好啊）My name is chenjie。（我的名字叫陈洁）I‘m (年龄)years old 。（我今年x岁）I"m friendly to everyone,so many people like me .（我对人很友好，所以很多人都喜欢我）。I"m (身高)cm tall。（我有xcm高）I"m very lovely，too！（我也很可爱） My favourite subject is English . and i like sports very much . （我最喜欢的科目是英语，而且我很喜欢运动）English brings lots of fun . and sports makse me happy .（英语带给我很多乐趣，而且运动使我快乐） I like this sentence:“ nothing is impossible。”（我最喜欢的一句话就是：一切皆有可能。） So i always try my best to do everything well,and never give up easily.(所以我每一次总是尽力做好每一件事情，从来都不轻易说放弃）So this is me ,i hope to make friends with you all.（这就是我，我希望和大家都能成为朋友。）

不太对，果然是确实如此的意思。你造的句子如果换成竟然还说得过去。重新造一个吧。

　　家庭，是我们美好的归宿。你的家庭是怎样的呢?写一篇 英语 作文 描述一下吧。以下是我为大家整理的，有关我的家庭英语作文50字，希望大家喜欢。　　我的家庭英语作文篇一 　　My family has four members.My mother is a housewife. 　　She looked after my family carefully.My father is a self-employed laborer. 　　He works very hard for the whole family.My sister and I are both primary school students . 　　Our family live very happily together. 　　我的家庭英语作文篇二 　　Do you want have my name?I want tell you. 　　My name is Betty, Iu2019m fouteen, Iu2019m a student, Iu2019m in NO.1 High School. 　　I have a happy family. My father is an office worker, he works in an office. 　　My mother is an office worker, too. 　　Bananas, rice are my fatheru2019s favorite food, but apples are my motheru2019s favorite food. I like chicken very much. 　　I have a happy family and I love my family! 　　我的家庭英语作文篇三 　　I have a happy family,my family is my father, sister,mother and me. 　　Mother and father are worker，back home are very tired everyday, but mother a piace cooking . 　　Sister is very good,she often to care for mother,father and me. 　　I love they. 　　我的家庭英语作文篇四 　　My father is a doctor. He works in a hospital. He is tall and strong. 　　He likes to help others .He doesnu2019t like watching TV, but he likes reading newspaper and read it every night. 　　My mother is a nurse. She works in my father"s hospital.She is very polite.She has good habits. 　　She likes eating vegetables and drinking milk every day. 　　But I donu2019t like milk. It is awful. She likes watching Beijing Opera at free time. 　　She says itu2019s good for her to keep young and it can make her relaxed.i like my family.我的家庭英语作文50字相关推荐： 1. 介绍我的家庭英语作文 2. 我的家庭英语作文4篇 3. 我的家庭英语作文60词 4. 我的家庭小学英语作文5篇 5. 有关我的家庭高考英语作文范文

手机即是一个通讯工具，也更可以当做电子钱包使用。

　　Our Great Motherland　　Our great motherland is one of the largest countries in the world. It has a population of over twelve hundred million. Beijing is its capital.　　We Chinese people are brave and hardworking. We have a glorious revolutionary tradition. We drove out all the enemies. In 1949 the People"s Republic of China was founded. Since then great changes have taken place in our motherland. Now our country is getting stronger and stronger. We Chinese people are working hard to make our motherland into a powerful country.

基本来说，是用到两个方程：第一个，检测B对C的主效应，C=a1+b1B；第二个，检测A对B、C关系的调节效应，C=a2+b2B+c2A+d2A*B 。在实际应用中，一般只需要第二个方程就够了。在spss中，做一个线性回归分析，因变量为C，自变量为A、B和A*B，然后看系数d2是否显著。如果显著，则有显著的调节效应；如不显著，则调节效应不明显。

调节效应是交互效应的一种，是有因果指向的交互效应，而单纯的交互效应可以互为因果关系;调节变量一般不受自变量和因变量影响,但是可以影响自变量和因变量;调节变量一般不能作为中介变量，在特殊情况下，调节变量也可以作为中介变量，例如认知归因方式既可以作为挫折性应激（X）和应对方式(Y)的调节变量也可以作为中介变量。常见的调节变量有性别、年龄、收入水平、文化程度、社会地位等。在统计回归分析中，检验变量的调节效应意味着检验调节变量和自变量的交互效应是否显著。

　　你的 爱好 是什么呢?大家不妨写一篇 英语 作文 和大家分享一下你的 兴趣爱好 吧。下面我为大家整理了有关我的爱好英语作文50词，欢迎大家阅读。 　　我的爱好英语作文篇一 　　I have a lot of hobbies. I like playing badminton, listening to music and playing the piano. 　　They are fun. My sister likes playing the piano very much. 　　But my parents donu2019t like this. I don"t like fishing or playing chess. 　　My sister also does not like this. My sister and I have some same hobbies. 　　What are your favourite hobbies? Can you tell me? 　　我的爱好英语作文篇二 　　Everyone has his or her own hobby.Today I am going to talk about my hobby. 　　My hobby is swimming.I like it very much,although I don"t swim very well. 　　And I go to swim with my friends every summer.My swimming coat is blue,because blue is my favourite color. 　　I enjoy swimming in the sun,it"s really cool. 　　I hope I can learn to swim well this summer. 　　我的爱好英语作文篇三 　　I have many hobbies.In my spare time,I like listening to some pop music,especially the music played by some pop bands. 　　It can make me relax and let me forget my unhappy moment. If I"m in good mood,I always read some history books,which I think is benefical to my study . 　　Besides,surfing the Internet is another means of entertainment of mine. 　　Through the Internet I can get some useful information and chat with my friends as well.The Internet has shortened our distance. 　　我的爱好英语作文篇四 　　I have many hobbies, such as reading, writing, singing, drawing, watching TV and doing exercise. I think hobbies can make my life colorful. 　　And I can make friends easier, because we have common interests and we have many things to talk about. 　　Besides, having some hobbies can bring knowledge to me. For example, reading is a good way to get knowledge. 　　I can not learn all from class, so reading can bring me other knowledge. 　　Singing and drawing are skills. They can help me to improve myself. 　　我的爱好英语作文篇五 　　My name is Qiou Ye. I am twelve. 　　My favorite sport is ping-pong and swimming. I like basketbll and I like volletball. 　　I can play the piano and draw, I can play them very well. This is Me. 　　Can you tell me about yourself ? 我的爱好英语作文相关推荐： 1. 我的爱好小学英语作文5篇 2. 我的爱好My hobby英语作文 3. 描写我的爱好英语作文4篇 4. 我的爱好英语作文50词 5. 我的爱好英语作文200词

1 DecisionsThis week is really busy and crucial for me, as I have made up my mind to get some change and have a new beginning. Not everyone has the courage to change, since change means more difference and you need to adapt to the new environment while the recognition from others have to be re-established. But I don"t want to waste my life any more and what I really want is an enriched life other than a boring one. People grow up while they experience challenges. The way how to face and handle challenges is hard to learn from others, and you have to experience it by yourself, just like the lyrics says, "Unable to see the rainbow without experiencing storm". Everyone has to make choices and decisions, while it"s hard for us to forcast whether it is right or wrong. Just think before you do and ensure that you have the impact analysis and you are ok to accept that. So just say "Good luck" to myself, hope what I choose is a wise one and no regrets for that choice. 2This afternoon, we play a game called u2018Family Treeu2019. This game is very interesting. Iu2019m very interested in it. Our teacheru2019s family is very large. She has many brothers and sisters. But I am unlucky, I has only a sister and I without brothers. But I think I have the best parents in the world. They are very friendly to me. I live in a good family. My grand parents loves me, too. When they buy meat, they will give the best parts of the meat to me.When I was a child, I canu2019t undertand them. I want to have bread. My grand father took a bike to Qu Tang. Because in our village there is no u2018bread houseu2019. Qu Tang is far from our village. Now I grow up. I understand them when I think of this things. I will cry I canu2019t use words to say I love them.I love my family .3.My favourite bookMy favourite book is Harry Potter.It has 7 books in all.It"s a book about magic and other wonderful things which we can"t find in real life.I love reading those books because they make me feel like I"m inside the book with the characters.I always feel excited while reading the books.I also appreciate the author,who is J K Rowling.She uses beautiful words to describe things that we can only imagine.She can make it real and hard to forget.All in all,Harry Potter is my favourite book and I"ll read it again and again.4u3001Today I found time was a cruel thing. Whatever man is, time always goes on. It wonu2019t stay to wait for somebody. You canu2019t use anything to exchange time. Time is also a fair thing. Although you have a lot of money or you enjoy high reputation, time wonu2019t leave them more. Today I found I hadnu2019t enough time. Although I have more than a-month holiday, but I found I had a lot of things to do. I had a lot of homework to do and I am essential to complete the homework as soon as I have time.5u3001There is no doubt that happiness is the most precious thing in the world. Without it, life will be empty and meaningless. If you wish to know how to get happiness, you must pay attention to the following two points. First, health is the secret of happiness (the key to happiness). Only a strong man can enjoy the pleasure of life. Secondly, happiness consists in contentment. A man who is dissatisfied with his present condition is always in distress. It was the first day of our summer holiday. All of us were very happy. Why? Because we have one months to do things we love to do. We are free.Although we have some homework. But we can finish them in several days. And the rest time we can make good use of. My god! We have been very tired after hard studying. In winter holidays, I want to have full sleepand eat good food in order to replenish myself. Last but not the least, I will have a good rest. It was the second day of our summer holiday. I felt good. I felt I am free. I had a lot of time to do things I like. My parents are in Zhongshan. So I live alone but I donu2019t feel lonely. But I didnu2019t do something special. I stayed at home and watched TV. Oh! I wrote an Englishdaily composition. It was my homework. Today, I have slept for 14 hours.I thought I was very tired. It was time for dinner. I must go! I am very hungry. I am planning to spend my summer holiday on sports this year. Playing basketball is always my favourite, so some of my classmates and I will form a small team and play basketball together. Sometimes we may have a match against some other teams and I do enjoy the sense when we win the game. Today I found time was a cruel thing. Whatever man is, time always goes on. It wonu2019t stay to wait for somebody. You canu2019t use anything to exchange time. Time is also a fair thing. Although you have a lot of money or you enjoy high reputation, time wonu2019t leave them more. Today I found I hadnu2019t enough time. Although I have more than a-month holiday, but I found I had a lot of things to do. I had a lot of homework to do and I am essential to complete the homework as soon as I have time. It was the first day of our summer holiday. All of us were very happy. Why? Because we have one months to do things we love to do. We are free.Although we have some homework. But we can finish them in several days. And the rest time we can make good use of. My god! We have been very tired after hard studying. In winter holidays, I want to have full sleepand eat good food in order to replenish myself. Last but not the least, I will have a good rest. It was the second day of our summer holiday. I felt good. I felt I am free. I had a lot of time to do things I like. My parents are in Zhongshan. So I live alone but I donu2019t feel lonely. But I didnu2019t do something special. I stayed at home and watched TV. Oh! I wrote an Englishdaily composition. It was my homework. Today, I have slept for 14 hours.I thought I was very tired. It was time for dinner. I must go! I am very hungry. I am planning to spend my summer holiday on sports this year. Playing basketball is always my favourite, so some of my classmates and I will form a small team and play basketball together. Sometimes we may have a match against some other teams and I do enjoy the sense when we win the game. Today I found time was a cruel thing. Whatever man is, time always goes on. It wonu2019t stay to wait for somebody. You canu2019t use anything to exchange time. Time is also a fair thing. Although you have a lot of money or you enjoy high reputation, time wonu2019t leave them more. Today I found I hadnu2019t enough time. Although I have more than a-month holiday, but I found I had a lot of things to do. I had a lot of homework to do and I am essential to complete the homework as soon as I have time.

我喜欢玩积木，因为这可以锻炼我的耐心，我的动手能力。我喜欢玩网球，因为这可以令我的反应能力更加迅速，使身体素质得到提高。我喜欢玩数独，因为数独可以锻炼我的思维能力与分析能力。

主要看交互项，交互项显著即有调节效应，反之则没有。网页版SPSSAU上也有这个功能，可以参考下：调节作用-SPSSAU

The English teacher in our school is Mr. Wu. Usually we call him mother Wu. Fat as he is, he is very beautiful. His voice in class is very kind. As long as it is the class he has brought, he will definitely improve his score. He was very kind to us, very kind. This is our lovely and beautiful mother Wu.

丁亚尔看看这看看那怎么也不够？造句你这是什么意思呢？没有看明白。

1. 写英语作文50个字的要有翻译12篇 Some time I think I am a good student,but some time I did not think so.One day I went to see my friend by bus.When I got to the bus stop,many people were standing in line.I did not want this queue. I went to the front and stood there.One of the people said to me,"You must not jump the queue,girl."With a red face I said sorry and went to the end of the line. I made up my mind to be a good student in the future.I believe myself. 有时我认为我是一个好学生，但有时我不这么认为。 一天 我乘公交车去看朋友。当我到汽车站时，许多人都在排队上车，我不想排队。 于是我走到最前面站在那。一个人对我说：“小女孩，你不能插队。” 我的脸红了，于是我走到了队伍的最后站下来。我下决心做一个好学生，我相信自己。 2. 写50字左右的英语小作文 i feel soory that i have someting very important to do.我很抱歉因为我有一些重要的事要做。so at firt i want to apoligise to you .首先我想要表达我的歉意。i hope you can five me .希望你可以原谅我。everyyear ,we all have o "birthdaies"right？ 每年我们都有两个生日，不是吗？（阴历和阳历）so the next birthdaty ,i will celebrate it with you .only we o .所以在下一个生日我可以和你两个人一起庆祝。there will be more fun .到时肯定会有很多乐趣的 这样子可以吗？不可以的话可以给我留言，我再补充。都是我自己写的，希望对你有帮助。 3. 写两篇英语作文 My friend Hai Yan "s real birthday is May 2th,but she held the birthday at today for us,I am so moved that she is a girl who really good for us.Hai Yan I wish you could achieve all of the birthday desires,and hope you can happy every day and have a huge career by your effort. Today"s afternoon Hai Yan came to my house at 10:30,because she want to reserve a KTV room near my house.But the singing place doesn"t operating until 12:00.So we out of my house on time and going to Dong Fang KTV.After one hour there are lots of people in the KTV room which we reserved.They picked the songs for themselves。You know what?They are so fantastic because almost all for them"s singing are great。 After singing we going to the harbor hotel to have ours" birthday party dinner,there are so many dishes of food on the table and all of the dishes of food looks like delicious,we eat for long time。Ok,After of these matters we should do something interesting,at first someone suggested us to ask a question to Hai Yan,if she can"t answer the question she should to drink a cup of beer。Finally,we eat the birthday cake。 We did lots of things tonight,it"s a great night。 Different people have different hobbies.I used to listen to pop music in my spare time.Listening to pop music helped me relax when I was tired.It also brought me happiness.But my interests are changing all the time .I used to wasn"t interested in sports at all.Now,my hobbies are sports like play basketball and swimming.I think playing basketball can makes me strong.Swimming is a good way to keep healthy,and it can help to keep my hear and lungs healthy. What hobbies do have? Can you tell me? 第一篇有点长了，你可以少抄点 4. 帮写一篇英语作文50字左右 Hello everyone. My name is selina. I"m a 14-year-old stndent.My birthday is 8 August. I"m new here and I want to make some friends with you, so let me introduce myself for you first. I usually eat dinner at 6:30pm and then I go to bed at half past ten. I can dance and sing and I love them so much.My favorite subject is music,English and PE.I like dies,too.So if you be my friends,I really want to see a funny movie with you. 大家好，我是Selina.我十四岁，我的生日是8月8日。我刚来这儿，所以我想和你们交朋友，那么就让我先介绍我自己吧。我呢，通常在下午6:30吃但，然后大概在10:30睡觉。我非常喜爱跳舞和唱歌。所以我最喜欢的学科是音乐、英语和体育。我也很喜欢喜剧。如果你成了我的朋友，我真的很想和你去看一场有趣的电。 5. 写一篇50字的英语作文 To begin with, we"d better keep quiet in library, in case the noise we make will disturb others. And we should treasure the books and return them in time. Besides, we ought to stand in a line when waiting for a bus. Never shall we jump the queue or stand just in front of the door to the bus. What"s more, be quiet even if we are at home and don"t throw rubbish out of the window. In my opinion, being middle school students, we should pay attention to our behaviour and be good-mannered.。 6. 求写个英语作文 50个字就行 Restaurant manager is most suitable to me. Since I have had a strong will of being an expert at management, restaurant is a good place to study management and I can get a lot of experience on how to maintain the budget or imports from it at the same time, restaurant manager is the best choice for me。 7. 英语作文,50字 I Love My Family I have a happy family. My family have five poeple:grandpa, grandma, father, mother, and me. My grandparents live in countryside. They have six rooms. The room is big. There are o apple in the ground. They have sixteen goats and three cows. The goat is white. The cow is yellow. They are healthy. My parents and me live in city. My father is a worker. His work is hard. My mother is a high school"s Chinese teacher, She take bicycle go to work at seven"clock. In the afternoon, she doesn"t go home. In the evening, she make supper. The food is delicious. I am a student. I have Chinese, math and English everyday. That is boring. I have many friends. After class, I play with my friends. We are tried, but we are very happy. I love my family。 8. 英语作文,50字 I Love My Family I have a happy family. My family have five poeple:grandpa, grandma, father, mother, and me. My grandparents live in countryside. They have six rooms. The room is big. There are o apple in the ground. They have sixteen goats and three cows. The goat is white. The cow is yellow. They are healthy. My parents and me live in city. My father is a worker. His work is hard. My mother is a high school"s Chinese teacher, She take bicycle go to work at seven"clock. In the afternoon, she doesn"t go home. In the evening, she make supper. The food is delicious. I am a student. I have Chinese, math and English everyday. That is boring. I have many friends. After class, I play with my friends. We are tried, but we are very happy. I love my family 9. 英语作文50字 Latern festival is one of my favorite festivals.My parents always take me to grandma"s home to spend some time with them.We eat dumplings together and we always have a great time!and in this Year"s Lantern Festival,i also went to my grandparents" home.It seemed that they are happy to see me.then we went out to have a great meal.it was really cool!。 10. 英语作文50字左右 我给你找三篇我写的 My teacher is Miss Li.She is my favorite teacher.She"s tall,slim and very *** art.Her favorite colour is blue.Shee likes reading and travelling when shee was free.Besides,she is helpful and patient as she"s always ready to help people who got in trouble.She ever won the first prize in the teaching petition i always like doing housework when i am free in weekends.And On saturday this week,I washed my clothes and shoes.I am really fond of doing it because i feel happy when i put myself in busy.And i did cook some dishes.And my parents enjoy it very much.They said it was delicious and i was happy. Latern festival is one of my favorite festivals.My parents always take me to grandma"s home to spend some time with them.We eat dumplings together and we always have a great time!and in this Year"s Lantern Festival,i also went to my grandparents" home.It seemed that they are happy to see me.then we went out to have a great meal.it was really cool!

就这？就这？就这？

　　陆续一词解释为表示前后连续不断，你会用词语陆续怎么造句?以下是我给大家带来的陆续内容，有兴趣的朋友快来阅读欣赏吧。 　　陆续的释义 　　【词目】陆续 　　【拼音】lù xù 　　【英译】[constantly;continually;all the time;one after another; in succession] 　　【近义词】连续、持续 、继续。 　　【基本解释】先后相续不断。 　　陆续的造句 　　1*** 地震中，武警官兵陆续的赶到现场抢险，为灾区群众带去了希望。 　　2*** 枝条上陆续地长出了许多花骨朵。 　　3*** 老师提了一个问题,同学们陆续地举起了小手，准备挑战自己。 　　4*** 自从匪酋被捕后，助纣为虐的党羽也陆续落网，真是大快人心。 　　5*** 人类建造的工厂陆续在增加，导致环境陆续遭到破坏。 　　6*** 我和小伙伴陆续跳上一条船，准备去航海。 　　7*** 清早，渔船陆续离开海岸，载着渔夫去扑鱼了。 　　8*** 春游活动开始了，我们全班同学陆续跟在导游的后面进行参观。 　　9*** 春节快到了，人们陆续地回老家过团圆年了。 　　10*** 春天来了，蝴蝶兰陆续开花了，真是美丽极了。 　　11*** 下课了，同学们陆续地走出教室，奔向操场玩去了。 　　12*** 放学了，同学们像小鸟一样陆续“飞”回家了。 　　13*** 放学了，同学们陆续的从校园里走出来。 　　14*** 放学后，同学们如约陆续来到小涛家，一场别开生面的生日会隆重上演了。 　　15*** 天黑了，在外面奔波了一天的大人陆续回家了。 　　16*** 随着只美丽又可爱的“南极小企鹅”的到来，越来越多的游客从各地陆续赶来看望这几个远道而来的小“贵宾”。 　　17*** 代表们陆续谈了自己的看法。 　　18*** 银杏的叶子开始泛黄，在飒飒的秋风中摇摇欲坠，它们有的在树枝上荡著秋千，有的三五成群陆陆续续地坠落到草地上，还有的跳着舞，打着璇儿落入水中随波逐流。 　　19*** 春天来了，花儿陆续地开放了。 　　20*** 放学了，同学们陆续的回家了。 　　陆续的造句示例 　　1*** 放学了，我们陆续离开了校园。 　　2*** 每当植树节到来之际，全国各地便陆续掀起植树造林的热潮。 　　3*** 间操以后，同学们陆续走 *** 室。 　　4*** 每当夜幕降临，城里的灯光就陆续地亮起来。 　　5*** 电影散场了，人们陆续从影院走出来，开心地议论著电影的内容。 　　6*** 开学了，同学们陆续地来到了学校报名上课了。 　　7*** 开会的人陆续走进会场。 　　8*** 眼看考试时间快结束了，同学们也陆续交卷了，可是我的好朋友小王却还在那“绣花”呢，真令人为她着急! 　　9*** 春天来了，水仙花陆续的开放了。 　　10*** 我班同学持之以恒地紧跟晚报校园童话版造句，所以陆续发表了不少造句。 　　11*** 一辆公交巴士开到了总站,里面的乘客们陆续下车了。 　　12*** 每期晚报登下周造句题目时，我们班的同学就会陆续造句发在班级部落格上。 　　13*** 放学路上，我看见家长们陆续车穿过马路来到学校门口接孩子。 　　14*** 开学了，我们班在关爱行动的捐款活动中陆续捐了近多元。 　　15*** 灭火任务已经完成,消防人员便陆续撤离了火场。 　　16*** “叮铃铃，叮铃铃!”上课的 *** 响了，同学们陆续的回到各自的座位上。 　　17*** 紫色的睡莲在早晨，七点左右陆续开着绚丽多彩的花。 　　18*** 早晨，各班同学陆续来到操场上准备做早操;瞧：我们班的队伍多整齐呀! 　　19*** 上课 *** 响了，正在游戏的同学们陆续地 *** 室准备上课了。 　　20*** 放学了，同学们陆续离开学校，兴高采烈的走在回家的路上。 　　21*** 随着战争的减少，世界越来越和平，核武器也在陆续减少。 　　22*** 到做广播体操的时间了，同学们一个一个陆陆续续地下楼梯，秩序井然。 　　23*** 放学时,同学们都陆续奔跑出校园,像一只放飞的小鸟奔回家。 　　24*** 在人类的大量破坏大自然的时候，野生动物也陆续减少。 　　25*** 我已经长大了，我现在陆续开始帮助家长做家务了。 　　26*** 外国元首陆续来访，所有报纸皆以头条新闻大书特书。 　　27*** 地球上可供人类使用的淡水资源陆续在减少，所以我们要保护水资源。 　　28*** 围绕这届奥运会，一系列丰富多彩形态各异的文化体育活动将陆续展开，汇为普天同庆的文化盛典。 　　29*** 上课时候同学们不约而同地举手回答老师的提问，老师让我们陆续地站起来回答。 　　30*** 四川大地震过后,我们班上的同学为了给灾区的人民奉献爱心,都陆续捐上自已的零花钱. 　　

My family is a big family. There are five people in my family: my parents, my grandparents and I. My father is a strict person. He always ask me to do the best. My mother is kind and warm-hearted. She always takes care of all of us. My grandparents are old, but very healthy. They are very humorous and interesting people. I like to pass time with my family and they are an important part in my life.

My DayToday, I woke up at 6:30 am and had breakfast. Then, I went to school and attended classes until noon. After that, I had lunch with my friends in the cafeteria. In the afternoon, I played basketball with some classmates and did homework afterwards. At night, I watched a movie before going to bed.我的一天今天，我在早上6点半起床并吃了早餐。然后，我去学校上课直到中午。之后，我和朋友们在食堂里吃了午饭。下午，我和几个同学打篮球并做完作业。晚上，在睡觉前看了一部电影。

不好意思，我没有看懂！′

英语作文50词左右范文（一） Most kids like animals。 Girls like cats， and boys like dogs。 However， my favorite animal is the horse。 我推荐： 高考英语作文范文20篇 The horses are strong， not like the tame cats or puppy dogs。 They look wild and hard to get close。 Yet， they will be very timid and friendly after they get to know you。 Horses remember the way home。 They are also faithful to their masters。 They even understand what you are trying to tell them。 I"ve heard many stories about how a horse saved his master"s life。 That"s also the reason why I love horses。 They never betray you。 大多数孩子喜欢动物。男孩和女孩喜欢猫，喜欢狗。然而，我最喜欢的动物是马。 马是强大的，不像温顺的猫或狗狗。他们看起来野生和难以接近。然而，他们将会十分胆小，友好的了解你之后。马还记得回家的路。他们也对他们的主人忠心耿耿。他们甚至明白你想告诉他们什么。我听说许多故事关于一匹马救了主人的命。这也是为什么我喜欢马。他们永远不会背叛你。 英语作文50词左右范文（二） It was the second day of our summer holiday. I felt good. I felt I am free. I had a lot of time to do things I like. My parents are in Zhongshan. So I live alone but I don"t feel lonely. But I didn"t do something special. I stayed at home and watched TV. Oh! I wrote an Englishdaily composition. It was my homework. Today, I have slept for 14 hours.I thought I was very tired. It was time for dinner. I must go! I am very hungry. 这是我们第二天的暑假。我感觉很好。我觉得我很自由。我有很多时间做我喜欢。我的父母都在中山。所以，我独自生活，但我并不感到孤独。但是，我没有做什么特别。我住在家里看电视。噢!我写了英语日记组成。这是我的功课。今天，我睡了14 小时.我以为我很疲惫。现在是吃晚饭。我必须去!我非常渴望。 英语作文50词左右范文（三） Computers Computers are changing our life. You can do a lot of things with a computer. Such as, you can use a computer to write articles, watch video CDs, play games and do office work. But the most important use of a computer is to join the Internet.We don"t need to leave home to borrow books from a library or to do shopping in a supermarket. Computers help us live a more convenient life. 计算机 计算机改变我们的生活。 您能做很多事用计算机。 例如，您能使用计算机写文章，手表录影CDs，戏剧比赛和完成办公室工作。 但对计算机的最重要的用途是加入Internet.我们不需要离开家去从图书馆借用书或在超级市场做购物。 计算机帮助我们居住更加方便的生活。

英语作文50字 篇1 　　Today was Sunday and I was very happy!In the morning,I stayed at home to do my homework and watch TV.In the afternoon,I went to a park with my best friends.There were many flowers, and some birds were singing songs.We played games and talked about our dreams.At last,we went home for dinner.Today, I had a great time! 　　英语作文50字 篇2 　　Most kids like animals.Girls like cats, and boys like dogs. However, my favorite animal is the horse. 　　The horses are strong, not like the tame cats or puppy dogs. They look wild and hard to get close. Yet, they will be very timid and friendly after they get to know you. Horses remember the way home. They are also faithful to their masters. They even understand what you are trying to tell them. Ive heard many stories about how a horse saved his masters life. Thats also the reason why I love horses. They never betray you. 　　英语作文50字 篇3 　　Look ,I have a nice room .Come and have a look .Itu2019s small and nice .There is a big bed ,a small desk ,a shelf and a closet .The bed is near the desk .There is a shelf near the closet too .Many good books are in the shelf .I like the books very much .Oh ,yes ,There is a big board on the wall .I often write and draw pictures on the board . 　　Oh ,My bedroom is too beautiful .I like it very much .Do you like my bedroom?Can you tell me about your beroom ,please. 　　英语作文50字 篇4 　　My classmate who called Limei.She is a beautiful girl, she has long long hair and big eyes. She always smiles.She has a little brother. We often play together. I like her very much. 　　英语作文50字 篇5 　　This is my friend. His name is Tom. He has two big eyes and a small nose. He has a big mouth and two small ears. He likes eating beef, chicken, hamburger, pizza, pork and Chinese cabbage. He is good at playing football and he is good at running. Tom runs faster than me. 　　英语作文50字 篇6 　　When you go to work in the morning and find that traffic lights dont work, the traffic jam will certainly happen. A patient needs to be operated on at once. What will happen if the operation cannot be made because of the electricity. Without electricity, we can neither watch TV, listen to the tape, nor chat on line. Electricity is closely related to our daily life. 　　How terrible it would be if there were no electricity!

matlab中eval()函数的功能就是将括号内的字符串视为语句并运行。eval是Javascript内置函数，用于计算字符串表达式的值。例如eval("2+3") 返回的是5。

My last birthdayMy birthday"s in February. It was my birthday last week. I had a big birthday party . Lots of friends came to my home that day. They gave me a lot of birthday presents. We sang and danced at the party. We also ate birthday cake. We had a good time.我的生日在二月，上周是我的生日。我举行了一个大的生日派对。 许多朋友来到了我的家里，他们给我很多生日礼物，我们在聚会上唱歌，跳舞，还吃了生日蛋糕。我们玩得很开心。

先求这个函数的导数，再把这一点坐标带入导数表达式。导数是微积分中的重要基础概念。当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。导数实质上就是一个求极限的过程，导数的四则运算法则来源于极限的四则运算法则。17世纪生产力的发展推动了自然科学和技术的发展在前人创造性研究的基础上大数学家牛顿、莱布尼茨等从不同的角度开始系统地研究微积分。牛顿的微积分理论被称为流数术他称变量为流量称变量的变化率为流数相当于我们所说的导数。牛顿的有关流数术的主要著作是求曲边形面积、运用无穷多项方程的计算法和流数术和无穷级数流数理论的实质概括为他的重点在于一个变量的函数而不在于多变量的方程在于自变量的变化与函数的变化的比的构成最在于决定这个比当变化趋于零时的极限。

造句好像搭积木一样，用每个字搭成一句话。

3（sinx）＾2cosx

火越烧越旺，就可以使用道越烧越旺这个词语。因为一般烧起来的都是活，然后在造句的时候想到这个词语就可以了。可以参考一下

少年，暂且把函数当做一个x，一个y吧，

The situation still upsets me, but not as much as it did

多对一就是多个自变量值对应一个函数值一对多就是一个自变量值对应多个函数值举一个简单的例子就是圆方程：x^2+y^2=r^2里面既有一对多，也有多对一

slice还可以通过append函数实现元素的添加。append函数的格式为：append(slice, element)，其中slice是要添加元素的slice，element是要添加的元素。append函数会返回一个新的slice，因此需要将其赋值给原来的slice变量。slice还可以通过append函数实现元素的添加。append函数的格式为：append(slice, element)，其中slice是要添加元素的slice，element是要添加的元素。append函数会返回一个新的slice，因此需要将其赋值给原来的slice变量。slice的定义方式为：var sliceName []type，其中sliceName是slice的名称，type是元素的类型。与数组不同，slice的长度可以动态改变，因此它更加灵活。slice的定义方式为：var sliceName []type，其中sliceName是slice的名称，type是元素的类型。与数组不同，slice的长度可以动态改变，因此它更加灵活。slice还可以通过append函数实现元素的添加。append函数的格式为：append(slice, element)，其中slice是要添加元素的slice，element是要添加的元素。append函数会返回一个新的slice，因此需要将其赋值给原来的slice变量。slice的定义方式为：var sliceName []type，其中sliceName是slice的名称，type是元素的类型。与数组不同，slice的长度可以动态改变，因此它更加灵活。

这个很简单的，多元微分方程整体就是个函数，不过就是有不止一个的变量而已，在求解时，就是对哪个变量进行求微时，就将其看做变量，其余的都看作是常数就可以了。

虽然天气很热,但是农民伯伯依然到田里干活。虽然天气很热但是环卫工人还在烈日下工作。虽然天气很热但是是孩子还不不停地运动。虽然天气很热但是我们要去上体育课。虽然天气很热但是我不想去游泳。虽然天气很热但是我不想吃冰激凌。虽然天气很热但是我不想吃冷饮。虽然天气很热但是我不想喝可乐。虽然天气很热但是我想吃火锅。虽然天气很热但是我想出去玩。虽然天气很热但是我还是要出发传单。虽然天气很热但是我不想开空调。虽然天气很热但是我要盖被子睡觉。虽然天气很热但是我不想开风扇。虽然天气很热但是我想去爬山。

你可知道春节的大街有多热闹吗？每个人都会去各家去拜年，路上都是大红灯笼和红对联，看着特别喜庆。孩童也会收到好多的红包

对于二元函数z=f(x,y)，在求偏导数时可以先代入一个自变量，然后求关于另一个自变量的偏导数。比如，如果要求关于x的偏导数，可以先将y看作常数，将z=f(x,y)转化为关于x的函数，然后对x求导数，得到偏导数z/x。同理，如果要求关于y的偏导数，可以先将x看作常数，将z=f(x,y)转化为关于y的函数，然后对y求导数，得到偏导数z/y。但是，在求解混合偏导数^2z/xy时，不能简单地先代入一个自变量，再求关于另一个自变量的偏导数。因为这样做会丢失掉一些关于两个自变量的信息。当二阶混合偏导数连续时，先偏x后偏y跟先偏y后偏x相等，这时可以任意选择顺序；当二阶混合偏导数不连续时，需要按照特定的顺序来求偏导数。

火红的柿子像个灯笼。

1. Christmas is coming up soon. 圣诞节很快就要来到。2. I"ll go to see you round Christmas. 我将于圣诞节前后去看你。3. Do you still remember that Christmas? 你仍记得那个圣诞节吗？