2014年八年级数学暑假练习参考答案

第一篇：2014年八年级数学暑假练习参考答案

2014年八年级数学暑假练习参考答案

上海外国语大学附属浦东外国语学校

1、B.7、-5.2、C.3、C.4、B.5、A.励一敏

6、D.8、y4x2.3

9、（18，0）.10、b0.11、x=7.12、0.313、52.14、ab.15、.1016、11.1617、十二.`18、50.19、x10,x26,x36 20、x12,x28.521、x=5.1x13x2122、，.y2y21

13

23、原计划每天挖6米.24、分别过点D、C作AB的垂线，垂足是E、F.梯形ABCD的面积是20.25、提示：先证△ADE≌△CBF，再证△DFM≌△BEN.26、（1）y=x-3.（2）15.2

24x24（0

（适合于二期课改教材八年级第二学期）

27、（1）CM=5cm.（2）y

第二篇：暑假数学作业练习答案

选择：BCBCDBBAB

填空：1x4y2、、2x5、4、;2、16、11;

3、90°;

4、17;

5、2.5×10-6;

6、22°;

7、108π;

8、100°;

9、六.解答题

∴∠APN=∠CQN=90°

∴AB∥CD

∴∠1+∠2=180°

∵∠2=80°

∴∠1=180°-∠2=100°.5、依题意(镜子平行)∴∠3=∠4，∵∠1=∠3，∠4=∠6，∴∠1=∠2=∠3=∠4，∴180°-∠1-∠3=180°-∠4-∠6，∴∠2=∠5，∴进入和离开的光线平行.6.证法不唯一

比如连结BC，在△ABC中，∠A+∠ABC+∠ACB=180°.即∠3+∠1+∠4+∠2+∠5=180°.①

在△BOC中，∠BOC+∠4+∠5=180°.②

由①②可得，∠BOC=∠1+∠2+∠3.7.(1)∠A+∠D=∠B+∠C;

(2)6个

(3)有(1)得，∠1+∠D=∠3+∠P，∠2+∠P=∠4+∠B，∴∠1-∠3=∠P-∠D，∠2-∠4=∠B-∠P，又∵AP、CP分别平分∠DAB和∠BCD，∴∠1=∠2，∠3=∠4，∴∠P-∠D=∠B-∠P，即2∠P=∠B+∠D，∴∠P=(40°+30°)÷2=35°.(4)2∠P=∠B+∠D.

第三篇：英语八年级暑假专题练习(附答案)

答题时间：30分钟）

选择填空：

1.Did Mary study at No.16 Middle School three years ______?

A.ago B.before C.after D.Yes, then 2.We don’t understand the passage ______ there are few new words in it.A.and B.if C.though D.because 3.Have you ever ______ Beijing to the Great Wall? Yes, I have.A.went to B.been to C.gone to D.been in 4.“Jack has ______ worked out the difficult problem.What about his classmates?” “________”

A.yet, Not already B.yet, Not yet C.already, Not yet

D.already, Not yet 5.Jack was ______ angry when he heard the words.A.a bit of B.a little of C.a few D.a bit 6.Let’s ______ them a good luck.A.to wish B.to hope C.wish D.hope 7.He _______ interested in biology for a few years.A.is B.has been C.becomes D.became 8.Mary plays football very ______.He is _______ at it than me.A.good, well B.well, good C.well, better D.good, better 9.Miss Chen ______ her husband six months ago.A.married to B.married C.married with D.got married 10.Liu Xiang works in _____ office _____ I do.A.the same, to B.the same, with C.the same, as D.the same, like

11.Now the air in our hometown is ______ than it was before.We must do something.A.much worse B.more better C.more worse D.much better 12.We are ______ this massage.A.surprising at B.surprised to C.surprised at D.surprising by 13.He got full marks because he answered all the questions ______.A.wrong B.right C.correct D.correctly 14.The teacher told us to finish our homework ______.A.on ourselves B.by us C.lonely D.on our own 15.We came here to ______ hello to them yesterday morning.A.speak B.talk C.say D.tell 16.Tiny with his parents ______ in Beijing now, but they ______ to the USA soon.A.live, move

B.live, will move

C.is living, will move D.are living, will move 17.Tom is ______ his pencil.At last he ______ it.A.looking for, finds B.look for, find

C.finding, look for D.finding, looks 18.It ______ me 5 yuan to buy that eraser.A.spend B.cost C.took D.takes 19.There are few books in that old library, ______?

A.is it B.isn’t it C.are there D.aren’t there

20.I bought many colour sweets ______ the second day of my trip.A.at B.in C.on D.during 21.The line of people outside the bank ______ endless at that time.A.are

B.were C.is D.was 22.It’s kind ______ you to help me.A.for B.of C.to D.with 23.The red tie ______ match with your green coat.A.isn’t B.don’t C.doesn’t D.hasn’t 24.I’m going to Hong Kong for a holiday.______.A.Goodbye B.You are right C.It’s good D.Have a good time 25.I don’t want to ______ you, I want to ______ football.A.play with, play the B.play with, play

C.play with, play with D.play, play with 26.He didn’t come here on time ______ the bed weather.A.because

B.because of C.since D.for 27.Sandy is flying to France soon, she will arrive ______ Paris _____ the morning of July,9th.A.at, in B.in, on C.in, in D.at, on 28.Would you like to have a swim this afternoon? ______.A.I like it very much B.I would like

C.I’d like to have D.I’d like to

29.It was ______ difficult work ______ nobody can do it well.A.so, that B.such a, that C.such, that D.so a, that 30.My little brother spent half an hour _____ football every day.A.on playing B.in playing C.to play D.for playing 31.Thank for giving me ________ I want.You are welcome.A.informations B.some informations C.the information D.an information 32.What he said ______ interesting, but it was out true.A.heard B.listened C.sounded D.looked 33.Will you tell me about the ______ news, Kitty?

A.latter B.late C.latest D.later 34.The stones were used ______ houses and bridges.A.to building B.building C.to build D.to be built 35.Her grandparents ______ for ten years.A.died B.have died C.were dead D.have been dead 36.Since he came last year, we ______ happy.A.are B.have been C.had been D.were 37.You can’t _____the book too long.I will use it in a week.A.borrow B.lend C.keep D.buy 38.Tom is more clever than _____ student in his class.A.all the other B.the other C.the all D.any other 39.When I came back, I found my mother ______ in bed.A.lying B.to lie C.lay D.laying 40.The places you have visited ______ bright purple.A.are marked in B.mark in C.are marked for D.mark for 41.___________ useful information!

A.What a B.What C.How a D.How 42.All we need is enough time to _____ with our work.A.put on B.carry on C.turn on D.try on 43.I ______ have supper at 5:00 p.m.every day.But now I _____ having supper at 6:00 p.m.A.was used to, used to B.used to, was used to C.used to, am used to D.am used to, was used to 44.Mr.Wang ______ the lazy boy do a lot of homework.A.wanted B.told C.asked D.made 45.The story is very ______ so many children are _____ in it.A.interesting, interested B.interested, interested

C.interesting, interesting

D.interested, interesting 46.She has ______ a package online.A.had B.ordered C.forgotten D.asked 47.______ the game ________?

A.Where is, set

B.What, called C.Who does, design D.In which country, sold 48.There was an important meeting last night.Mr.Smith _____ to it.A.was invited B.invited C.is invited D.invites 49.Please give my best wishes ______ your parents ______ the New Year.A.for, to B.to, to C for, for D.to, for 50.Great changes _____ in China in the past few years.A.has taken place B.took place C.have taken place D.have been taken place 【试题答案】

1.A 2.C 3.B 4.C 5.A 6.C 7.B 8.C 9.B 10.C 11.A 12.C 13.D 14.D 15.C 16.C 17.A 18.C 19.C 20.C 21.D 22.B 23.C 24.D 25.B 26.B 27.B 28.D 29.C 30.B 31.C 32.C 33.C 34.C 35.D 36.B 37.C 38.D 39.A 40.A 41.B 42.B 43.C 44.D 45.A 46.B 47.A 48.A 49.D 50.C 初中英语八年级暑假专题练习(句型转换)

答题时间：45分钟）

一、句型转换：

1.We have a class meeting once a week.（划线提问）______________________________________.2.He has done his homework already.（否定句）______________________________________.3.I get up early in the morning in the past.（同义句）______________________________________.4.He has been there for two weeks.（同义句）______________________________________.5.I don’t want to go there any more.（同义句）______________________________________.6.Harry Jones designed the game.（被动语态）______________________________________.7.My classmates have already gone to the museum.（一般疑问句）

_________________________________________.8.He can’t hear it clearly because of the noise.（划线提问）

_________________________________________.9.His cousin has visited Hong Kong twice.（划线提问）_________________________________________.10.I was late because my bike was broken.（同义句）_________________________________________.11.I hope I can pass all the exams.（同义句）_________________________________________.12.He won’t go hiking.（反意疑问句）

_________________________________________.13.Did the children fly kites on the playground?（at 4:00 yesterday afternoon.）

____________________________________________________________.14.She listened to the music.（while I was sleeping.）___________________________________________.15.He will laugh at me.He will see me.（用as soon as 连成句子）

__________________________________________________.16.Daniel got up early.He caught the early bus.（用so „ that 连成句子）

__________________________________________________.17.This is a bag.There is a red flower on it.（合并成一句）

_____________________________________.18.I’m reading a book.It is called “Seven Little Men.”（同义句）

__________________________________________.19.Maybe it’s a good idea to do that.（同义句）____________________________.20.This knife is used to cut things.（同义句）____________________________.21.I don’t know how to reach there.（同义句）____________________________.22.This girl is only eight years old.（同义句）____________________________.二、将下列句子改为被动语态： 1.We speak Chinese in China.__________________________.2.They often show us around their school._______________________________.3.Do you clean your classroom every day? ________________________________? 4.My parents usually buy me a present on my birthday._________________________________________.5.I gave him some money to the poor man last week.________________________________________.6.Our English teacher makes us read English every day.________________________________________.7.Who did he wait for just now? __________________________? 8.Did they look after the baby? ____________________________?

三、将下列句子改为间接引语：

1.She said to me, “I ring you just now.” _______________________________.2.The teacher said to the students, “Light travels faster than sound.”

___________________________________________________.3.Dr.Ma said, “We need some doctors to help us.”

_____________________________________________.4.Millie says, “My father has come back from Australia.” ____________________________________________.5.He said to me, “I’m a volunteer of the World Vision.” ____________________________________________.【试题答案】

一、句型转换：

1.How often do you have a class meeting? 2.He hasn’t done his homework yet.3.I used to get up early in the morning.4.He has been there since two weeks ago.5.I want to go there no more.6.The game was designed by Harry Jones.7.Have your classmates gone to the museum yet? 8.Why can’t he hear it clearly?

9.How many times has his cousin visited Hong Kong? 10.My bike was broken so I was late.11.I hope to pass all the exams.12.He won’t go hiking, will he?

13.Were the children flying kites on the playground at 4:00 yesterday afternoon? 14.She was listening to the music while I was sleeping.15.He will laugh at me as soon as he sees me.16.Daniel got up so early that he caught the early bus.17.This is a bag with a red flower on it.18.I’m reading a book called “Seven Little Men.” 19.It may be a good idea to do that.20.This knife is used for cutting things.21.I don’t know how I can reach there.22.This is an only eight-year-old girl.二、将下列句子改为被动语态：

1.Chinese is spoken in China（by us）.2.We are often shown around their school by them.3.Is your classroom cleaned every day? 4.I am often bought a present by my parents on my birthday.A present is often bought for me by my parents on my birthday.5.He was given some money to the poor man last week by me.6.We are made to read English every day by our English teacher.7.Who was waited for by him just now? 8.Was the baby looked after by them?

三、将下列句子改为间接引语：

1.She told me that she had rung me just now.2.The teacher told the students that light travels faster than sound.3.Dr.Ma said that they needed some doctors to help them 4.Millie says that her father has come back from Australia.5.He told me that he was a volunteer of the World Vision.初中英语八年级暑假专题练习(宾语从句和状语从句1)重点、难点

1.引导宾语从句的关联词的原则 2.状语从句的连词

具体内容

（一）宾语从句

定义：用作宾语的从句叫宾语从句。

（二）构成：关联词+简单句

（三）引导宾语从句的关联词有三类：

1.从属连词that。如：

He told us that he felt ill.他对我们说他感到不舒服。

I know he has returned.我知道他已经回来了。

注：that在引导宾语从句时也并不是任何情况下都可以省略。在以下情况下，that不能省略。

（1）Everybody could see what happened and that Tom was frightened.（and连接两个宾语从句，that宾语从句放在and的后面时，that不能省略。）大家都会看出所发生的事情并知道Tom非常害怕。

（2）I know nothing about him except that he is from the south.（that引导的宾语从句作介词宾语时，that不能省略。）对他我一无所知，只知道他是南方人。

（3）That he ever said such a thing I simply don’t believe.（that从句位于句首时，that不可省略。）我简直不相信他曾说过这样的话。

（4）We decided, in view of his special circumstances, that we would admit him for a probationary period.（主句谓语动词与that从句之间有插入语，that不可省略。）鉴于他的特殊情况，我们决定应允他一段试用期。

2.从属连词if/whether。如：

I doubt whether he will succeed.我怀疑他是否会成功。

I don’t know if you can help me.我不知道你能否帮助我。

3.连接代词who, whom, whose, what, which, whoever, whatever, whichever 连接副词 where, when, how, why。如：

Who or what he was, Martin never learned.他是什么人？他是干什么的？马丁根本不知道。

I wonder what he’s writing to me about.我不知道他要给我写信说什么事。

I’ll tell you why I asked you to come.我会告诉你我为什么要你来。

You may do what you will.你可做任何你想做的事。

（1）介词宾语从句

宾语从句也可用作介词的宾语。如：

He was deeply displeased by what had occurred that day.他对那天发生的事感到很不快。

I walked over to where she sat.我走向她坐的地方。

I am curious as to what he will say.我很想知道他要说什么。

Your success will largely depend upon what you do and how you do it.你是否成功将主要取决于你做什么和怎样做。

有时介词可以省略。如：

I don’t care（for）who marries him.我不管谁跟他结婚。Be careful（as to）how you do that.你要注意做这件事的方式。

四.重点疑难

1.如果宾语从句后还有宾语补足语，则用it作形式宾语，而将宾语从句后置。如：

We thought it strange that Xiao Wang did not come yesterday.我们认为小王昨天没来是奇怪的。

He has made it clear that he will not give in.他已表明他不会屈服。

2.作介词的宾语：连词that引导的名词性从句很少作介词的宾语，只用在except, but, in后。其他一些介词的宾语从句如果由连词that引导，则需用it先行一步，作形式宾语。如：

He is a good student except that he is careless.他是一个好学生，只是有点粗心。

You may rely on it that I shall help you.你可以指望我会帮助你的。

介词宾语不可以用which来引导，而要用what来引导。如：

Are you sorry for what you’ve done? 你为你所做的一切感到内疚吗？

3.某些形容词或过去分词后常接宾语从句，这类形容词或过去分词有sure, glad, certain, pleased, happy, afraid, surprised, satisfied等，连词that可省略。如：

I am not sure what I ought to do.我不能确定我该做什么。

I’m afraid you don’t understand what I said.恐怕你没领会我说的意思。

I’m surprised that I didn’t see all that before.我好奇怪，我以前没看到过。

Mother was very pleased her daughter had passed the exams.妈妈为她的女儿通过了考试而感到高兴。

4.连词whether（„or not）或if引导的宾语从句

if和whether引导的宾语从句可以互换使用，但whether常和or not连用，if一般不与or not连用。如：

I wonder whether it is true or not.我不知它是真是假。

用if引导宾语从句如果会引起歧义，应避免使用if而用whether。试比较：

Please let me know if you want to go.Please let me know whether you want to go.if从句可理解为宾语从句，意为“请告诉我你是否想去”；此句又可理解为条件状语从句意为“如果你想去的话，请告诉我一声”。

5.宾语从句的否定转移。在think, believe, suppose, expect等动词后的宾语从句，有时谓语尽管是否定意思，却不用否定形式，而将think等动词变为否定形式。如： I don’t think you are right.我认为你错了。

I don’t believe they have finished their work yet.我相信他们还未完成他们的工作。

I don’t suppose he cares, does he? 我想他不在意，是吗？

6.宾语从句的时态变化规律

（1）当主句是一般现在时态时，从句可根据需要用任何时态。

（2）当主句是一般过去时态时，从句只能使用过去范围内的任何时态。但客观真理除 外。如：

The teacher said that the earth goes round the sun.老师说地球绕着太阳运行。

状语从句：

时间状语从句：

状语从句需要连词引导。引导时间状语从句的连词有： when，while，as，as soon as，before，once，after，since，till/until等。例如：

When you finish doing this drill, you may go on to the next one.I’ll let you know as soon as it is settled.She has written fifty letters home since she came to Beijing.注意

（一）：

虽然till和until可互相交换使用。但在句首只能用until。

用于否定句时，表示“直到……时，才……”；“在……以前，不……”例如： Until you told me about the book I had no idea of it.（在你告诉我之前，我对此书一无所知。）

I won’t know where he is until I get a letter from him.（收到他的信时我才知道他在那里。）

时间状态语从句中用一般现在时表示将来时间，用现在完成时表示将来完成时间。例如：

As soon as my brother arrives, we’ll start working.while和as的区别：when表示从句动作与主句动作同时发生或先于主句动作，可以指一段时间也可以指特定的时间点；while表示从句动作与主句动作同时发生，表示“一边……一边……”，通常指一段时间。例如：

Jack stayed with us when / while he was in Beijing.He called us when he arrived in Beijing.地点状语从句：

引导地点状语从句的有where，wherever，everywhere等连词。例如： Where there is a will, there is a way.（有志者，事竟成）Wherever you met him, he was not in my house.Everywhere he goes he makes new friends.Everywhere she went, she was kindly received.条件状语从句：

一般由if（如果），unless（除非，如果不），as/so long as（只要）等连词引导。例如：

Please come by if you are free.Unless you study harder, you’re going to fail the exam.注意

（二）：

条件状语从句中也须用一般现在时表示将来时间，用现在完成时表示将来完成时间。例如：

If it rains tomorrow, we won't go hiking.初中英语八年级暑假专题练习(宾语从句和状语从句2)原因状语从句：

引导原因状语从句的连接词通常有because（因为），as（由于），Since（由于），now that（既然；由于）等。例如：

As it is raining, you had better take your umbrella with you.You must tell the truth since you know the fact.She couldn’t get up because her legs were wounded.I can’t go to the movie because I'm too busy.注意

（三）：

because , as和since均可指原因，但because引导的从句常位于主句之前；而as和since引导的从句常位于主句之后；because表示原因的语气最强，而as和since语气较弱，只是附带说明一下主句内容是由从句引起的结果。as和since常指说话人和听话人双方都知道的原因。当回答以why引导的疑问 句时必须用because。例如：

Why didn’t you come to the meeting? Because I had a bad cold.结果状语从句

结果状语从句一般由so…that（如此„„以致于），such…that（如此„„以致于），such that（如此„„以致于）和so that（以致于）等引导。so…that与such…that的区别在于：so接形容词或副词，such接名词或名词词组。例如： He was so excited that he couldn't help jumping.She spoke so loudly that every one in the big hall could hear her.It was such a terrible accident that few people survived.There were so few students present that the class was cancelled.The book was written in such simple English that we could understand it easily.目的状语从句一般由so that（为了；以便）和in order that（为了；以便）引导的目的状语从句，lest 表示“免得/ 以防/ 以免”。从句中一般用虚拟语气，动词形式为“should+ 动词原形”。

She spoke louder so that everyone in the hall could hear her.They sent the book by air mail in order that it might reach us in good time.The teacher hid the key to exercises lest the students should see it.We set off early lest we should be late.让步状语从句：

让步状语从句常用although / though（虽然），even though / even if（尽管），as（尽管），whatever/ whenever/ however（无论什么/ 何时/ 如何），no matter what / when / how（无论什么/ 何时/ 如何）等到引导。no matter what/ when/ how（无论什么/ 何时/ 如何）等引导。as表示让步时一般用于部分倒装结构，though也有此 用法。例如：

We’ll try our best to finish the work in time though we are short of materials.He still wanted to do it although I warned him not to.Although she slept ten hours last night , she is still tired.Although the road was narrow, the driver managed to pass it safely.方式状语从句：

方式状态语从句常由as if/as though（好像，如同）等。例如： She acted as if/though nothing had happened.She always talks to him as if she were/was his sister.It looks as if it'll rain.He treats me as if I am/were his brother.【模拟试题】 一.单项选择

1.Do you know how much hot water ? A.Mum is needed

B.does Mum need C.Mum needs

D.did Mum need 2.Can you tell me ? A.where he is

B.where is he C.he is where

D.what is he 3.I didn’t know how to London? A.would they go B.are they going C.they would go

D.they are going 4.I want to know how long.A.has he been back

B.has he come back C.he has been back

D.he has come back 5.Do you know ? A.what the news are

B.what is the news C.what the news is

D.what are the news 6.He said he would help me with my maths if he free.A.was B.will be C.would be D.is 7.He will write to you as soon as he

to Shanghai.A.gets

B.is getting C.will get D.shall get 8.Father music when he young A.liked„was

B.liked„is C.likes„was D.likes„is

9.I liked sports I was young.A.so much as

B.so much that C.very much when

D.very much because 10.mother got home, I was tidying my room.A.After B.When C.As soon as D.Before 11.The teacher didn’t begin her class the students stopped talking.A.until

B.because C.after D.when 12.If it tomorrow, we’ll go to the Great wall.A.doesn’t rain

B.won’t rain

C.not rains D.isn’t rain

13.Could you tell me we get to the plane? A.how

B.whether C.where D.what 14.When they got to the cinema, the film for the ten minutes.A.had been on B.has begun

C.began D.had begun 15.The teacher says she will leave a message on the headmaster’s desk.A.if

B.who C.that D.what 16.Lucy looks stronger Lily.A.than B.as C.then D.not as 17.I know nothing about it he told me.A.because

B.since C.until D.after 18.You must make your new house clean and safe you move in.A.because B.when C.before D.until 19.I was tired I couldn’t walk on.A.so„that

B.too„to C.very„that D.very„to 20.I thought he to see his mother if he time.A.will go„has

B.will go„will have C.would go„would have

D.would go„had

二.用所给动词的正确形式填空：

1.I won’t return the book to the library because I（not finish）reading it.2.As soon as he saw me, he to speak to me.（stop）3.I hope he（come）back in a week.4.It

（rain）hard when I got to the factory this morning.5.The old man told the children（not walk）in the rice fields.6.He told me he（help）her with her maths the next evening.7.She said they（know）each other for quite some time.8.If it

（not rain）tomorrow, we（visit）the People’s Museum.9.John（write）something when I（go）to see him.10.Our teacher told us that light（travel）much faster than sound.11.When I got to the cinema, the film（begin）

12.Mike asked me if we（ask）any questions the next class.13.Will you come and stay with us for a while when you（finish）doing your homework? 14.Comrade Wang didn’t know if there

（be）an English evening that day.15.Please tell me if she（come）again next time.【试题答案】 一.1.C 2.A 3.C 4.C

5.C 6.A 7.A 8.A 9.C 10.B 11.A

12.A 13.A

14.A 15.C 16.A

17.C 18.C 19.A 20.D 二.1.haven’t finished

2.stopped 3.will come

4.was raining 5.not to walk

6.would help 7.had known

8.doesn’t rain, will visit 9.was writing, went

10.travels 11.had begun

12.would ask 13.finish

14.would be 15.will come

第四篇：八年级暑假答案

暑期卷子本部分作业答案

八年级语文阅读题

（一）1、因为是最可怕的惩罚(不知勾了多少遍，不知临了多少回，很辛苦)(得1分);剥夺了“我”童年做游戏的机会(得1分)(共2分)

2、父亲当画家的梦想因生活而破碎了，他希望“我”能重拾他的梦想，完成他未了的心愿。(2分)

3、“我”自认为已具备艺术才华，做着成名成家的梦(答出这一点的1分);梁畸先生的教诲使“我”清醒，让“我”认识到成名的梦做得越多，在生活中就必然会败得越惨，画画如此，做任何事都是如此(答出这层意思的2分)(共3分)

4、父亲为“我”取得的成绩而高兴(1分)，但这是短暂的(1分);更多的是对我获奖以后的表现感到担忧，父亲认为“我”现在追名逐利的思想已违背了他的初衷(2分)(共4分)

5、D(2分)

（二）1、此题共两点，答出一点得1分。某些植物“吃荤”的原因及捕食动物的三种基本方法(共2分)

2、“见惯不惊”。应改为“司空见惯”或“屡见不鲜”或“习以为常”。(只找出词语而修改不对，不得分)(共2分)

3、不能打乱，因为本文三、四、五段是按照第二段所介绍的三种捕食方式依次写来(或答成“照应上文所介绍的三种基本方式”也可以)(共2分)

4、本题共两点，能准确举例得1分，评析言之有理得1分。(共2分)

5、“吃荤的植物”(或“植物吃荤探秘”)(2分)

（四）春从心出 8．(3分)①在没有演出的剧场，从心灵里，演绎出一幕又一幕的活剧。②对旧照片窥欲久盛衰。③以往和如今买书的不同经历。（一点一分）

9．(3分)①人生如书，书如人生。②人生诡谲，犹如书林杂芜。③人生要追求活着的真谛，犹如要从书林中淘出善本精品。（一点一分）

10．(3分)①内容上：这件事启示人们要热爱生命，感情生活，诗意地看待生活。②结构上：起过渡作用；深化了作者的思考，引起了议论。（结构与内容各2分）

11.(3分)如：动词“蹦”字运用了拟人的手法形象生动地表现了这些错别字出现是多么的生硬刺眼，像石头一样硬邦邦地挡住了我们的视线，破坏了我们阅读的兴致。（答题要求突出语言的生动性具体表现在哪里，占两分；词语所运用的修辞手法，占一分）

12．(4分)我们要理智地面对青春，面对生活，珍惜青春，珍惜生活，让每一天都生活得有意义，让青春在心灵中永驻。（引用原文——诗意地看待生命，看待青春，看待成败得失，看待生关死劫；需知，有一种春天是永存的，那便是从心灵滋生出来的，大雁跋涉般的豪情„„得两分。要答出“春”的含义即一种青春，一种有意义的生活，有质量的生命）

说明文阅读 玻璃之王

1.弥补缺憾 zhou shi

2.形容从无到有的打通、创建。

3.①玻璃之王（或金属玻璃，后同）的诞生②玻璃之王形成的原理③玻璃之王的获得④玻璃之王的应用

4.举例子、列数字、作比较；（3分）具体准确突出地说明了单一的金属液体凝固形成非晶态所需的冷却速度要远远高于其它物质液体。（1分）

5.不能删掉。（1分）“可能”表猜测，说明金属玻璃在将来也许会成为航天、军事及民用领域的理想候选材料，去掉了过于绝对化，与实际不符。（1分）“可能”一词体现了说明文语言的准确性、严密性、科学性。（1分）

6.制造高档录音机、录像机的高耐磨音频视频磁头；（1分）制造高压容器、火箭等关键部位的零部件。（1分）

微藻净化海洋环境的明星1.蔚蓝 随波逐流 qin chu

2.明星是有名的且技巧非常高的表演者，本文主要指微藻在净化海洋环境起到十分鲜明地作用。（2分）标题交代了本文的说明对象，引起读者的阅读兴趣，生动形象的说明了微藻在净化海洋环境中的显著作用。（2分）

明星是有名的且技巧非常高的表演者，本文主要指微藻在净化海洋环境起到十分鲜明地作用。

3.描写（1分）语言生动形象，富有感染力，引起读者的阅读兴趣；形象地写出了微藻千奇百怪的形态，引出下文说明对象---微藻。（2分）

4.微藻是海洋中的主要初级生产者，能够进行光合作用，将二氧化碳和海水中的氮、磷等营养成分合成为自身所需的有机物，同时释放氧气。

5.微藻生长中吸收利用废水中氮、磷等营养盐合成复杂的有机质。同时通过光合作用向水中供氧，使好氧菌能够不断分解有机质，进而产生二氧化碳，作为藻细胞光合作用的碳源。（3分）

八年级数学暑假作业

（一）：1-8：DCDCC BCB，9-16：5、25、10、45°、1234、24.5、50、1235.八年级暑假作业

（二）1-10：DABBC BDDBA 11-18：-

26、a大于等于-1,-a<

5、<0、>0、<1.5、<0.6、-5<=a<-4、40、x>-2 19(1)x>2(2)略（3）-1<=x<0.5 20.a=-2 21.4.5八年级数学暑假作业

（三）1-10：DdACA aACAB 11-20：20、2、√7、2.4、3、a≥-

1、3、-3

（四）1-10：BABCC cBcCD 11-18: 70、6、8、9、略、50、130 ,25 八年级数学暑假作业

（五）1-10：DBCBA DCCaa 11-18：(ab+0.1)(ab-0.1)、y(x+y)^

2、x(x-1/2)^

2、(x-3)、-2、2、14.5、4ab、（x-1）（x^n+x^n-1+...+n+1）、-1,1,-5,5 19：(1)（a-b+1）^2(2)-4xyz(x+3y-1)(3)-(x+2)(x-2)(x+3)20:(1)1(2)4 21:(1)-26(2)2012/2015 22:(a+b)^2 23:等边三角形。八年级数学暑假作业

（六）1-10:dACDC DCBAD 11-18:

1、b、2个、16x^2y^2、1/

6、0.5(a+b)、a/180、8/

3、0，19：(1)x=-3/2(2)x=3 20.x=(x+1)/(x-2)八年级数学暑假作业

（七）1-10：ＣＢaＡＡ

ＣＣcＡＣ 11-20：14题是1、15题是-

2、16题是0.25、-0.5、18题是90000、、物理暑假作业： 力精彩回放1 BDDAACDBB 10：BCD 11：AC

DBCD 运动和力精彩回放

单选：CCBDABCDDDADCB 多选:1B 2ABD 3A

4ACD 压强精彩回放1 ACBB 8:4000pa;50000pa

5:1500pa;2500pa

2：1200pa;2.7N;2700pa 压强3 BAAADCCBBAACCCBDA 压强综合

DBACADBCCADADCDCA 计算

1200pa;120g 十三章

力和机械

单选

CBBBDDBCCCADD

ACD 多选

AC

AC

ACD 计算

1800N

250N 1m

300N

距前面0.5m 压强浮力

BCACBCDABC 计算

4.8N

2200pa

3N

85﹪ 0.1m/s 2400J 60N 简单机械、机械效率1 DDCBBAD 8AB 9BD 10D 简单机械、机械效率2 DBBABCCDBD 化学暑假预习学案部分题目答案

1-1

12、C

13、C

14、C

15、C 2-1

1、C

2、D

4、C

5、B

6、C 2-2 任务二

1、C

2、C 任务四

2、D 2-3

1、C

2、D

3、B

4、B 实验技能二

1、D

2、C

3、B

第五篇：初中八年级暑假数学作业答案解析

(一)1.B2.B3.D4.B5.C6.C7.408.平行9.a=c>b

10.13611.内错角相等，两直线平行;3;4;两直线平行，同位角相等12.(1)略

(2)平行，理由略13.略14.(1)∠B+∠D=∠E(2)∠E+∠G=∠B+∠F+∠D(3)略

(二)1.C2.B3.D4.D5.D6.C7.50°或65°8.49.平行

10.9厘米或13厘米11.60°12.13.略14.略15.略

16.(1)15°(2)20°(3)(4)有，理由略

(三)1.20°2.厘米3.84.4.85.366.37.D8.C

9.B10.B11.略12.FG垂直平分DE，理由略13.0.5米14.同时到达，理由略15.(1)城市A受影响(2)8小时

(四)1.C2.D3.B4.A5.C6.A7.C8.B9.3010.6

11.，12.略13.略14.(1)直六棱柱(2)6ab15.36

16.厘米

(五)1.D2.D3.B4.D5.(1)抽样调查(2)普查6.8.07.17

8.50.49.31;3110.1711.冠军、亚军、季军分别为李扬、林飞、程丽

12.略13.略

(六)1.B2.C3.C4.50;105.0.1576米26.①②③7.略

8.略9.略

(七)1.B2.A3.C4.A5.C6.B7.D8.(1)<(2)>

(3)≥(4)<(5)<9.410.a

14.-2，-115.16.b<0

(八)1.D2.C3.C4.C5.n≤76.2

9.0≤y≤510.11.x3(3)无解

13.1，214.34，1615.(1)9≤m<12(2)9

(九)1.C2.B3.C4.18≤t≤225.4.0米/秒6.5，7，9

7.8.大于20000元9.2210.4人，13瓶