第一篇：人教版2018初二物理寒假作業答案

人教版2018初二物理寒假作業答案

初中寒假作業是不是一直困擾這你呢?不用擔心，查字典物理網小編為你帶來了人教版初二物理寒假作業答案啦，是不是很讓你興奮呢?那就快來看看吧!

1、B、2.45 2、28.2 25.1 3、2.5

4、人、河岸

5、運動

6、地面、地面、椅背、車

7、A

8、c

9、C

10、C

11、A

12、D、13、B

14、B l 2

1、長、短

2、每秒行駛5米 3、6.25 22.5 4、250 5/3

5、路程、時間、V=s/t 6、0.4 便于測量時間 7、100min

8、路程、時間、速度 9、6.25m/s 交接棒所用時間少 10、80 22.22 0.4511、8 6 大于

12、(1)v=s/t=300m/5h = 60 km/h(2)v=s/t=300m/2.5h=120 km/h(3)t =t1—t2 =5h—2.5h =2.5h l 3

1、振動、空氣、山間鈴響馬幫來

2、不能、能

3、快

4、不相同、空氣、耳朵

5、小于、波的、泡沫塑料屑在飛舞、在振動

6、C

7、C

8、C

9、音調、音色、音調、響度

10、頻率、快慢、頻率、高

11、次數 HZ 20---20000HZ

12、強弱、振幅、振幅、大、遠近

13、分貝、90dB

14、慢、低、大、大

15、音色、響度

16、信息、能量

17、C

18、B

19、C 20、A l 4

1、A

2、C

3、A

4、A

5、A

6、C

7、空氣柱、空氣柱、頻率、空氣

8、(1)能量(2)音色、9、(1)無法正常交流(2)無法聽音色(3)感受不到聲音帶來的信息

10、(1)聲音可以在固體中傳播(2)更好的接收聲音(3)聽診器

l 5 1、36.4、=、體溫計有縮口，水銀不會回流

2、A：沒有水平放置 B：正 C：接觸了容器底 D：沒有接觸液體

3、甲、38.5 38.5

4、(1)10(2)是、有固定的凝固點

5、放、低

6、B

7、B

8、D

9、C

10、C

11、d a c b e

12、(1)溫度保持不變、(2)溫度繼續上升、(3)圖略

l 探究性學習

1、真空中不能傳聲

2、B

3、D 4、50 5*10000

5、D

6、折射、虛、火車、地面

7、A 8、11.268

9、吸、熔化、力、熔點

10、慣性、力

11、同意，水滴就像一個凸透鏡，把陽光會聚，使樹林燃燒，從而引起火災。

12、因為衣服只能反射它原本的顏色。

13、測得十分鐘的路程，用V=S/T的公式求出速度

l 6

1、液化、汽化

2、汽化、液化、液化、凝固、3、吸、不變、大、沸點、不同、增大

4、液化、放

5、汽化、吸 6、100℃、不變

7、(1)沸騰前，溫度不斷上升(2)沸騰時，溫度保持不變

8、(1)98、不變(2)不是標準大氣壓

9、D

10、C

11、B

12、C

13、D 14、48 C

15、快、溫度計、B、25

16、(1)0 繼續吸熱，溫度保持不變、固液共存狀態(2)沒有加上蓋子

l 7

1、熔化、升華、凝華

2、室內、凝華、放

3、升華、凝華、熔化、4、低、凝華、熔化吸熱、5、C、6、A

7、B

8、D

9、C

10、B

11、B

12、液體的表面積、液體的溫度、液體上方空氣的流速

13、碘粉、碘粉、氣體、氣化碘、升華

14、液化、汽化

15、低、溫度計、不同、冰箱、凝固

l 8

1、（4、5、7)（1、2、6)(3)

2、近、的直線傳播

3、光的直線傳播

4、法線、入射光線上、反射光線、AON、40、BON、40、80

5、（5、10、8、不變)

6、直線傳播、反射

7、可逆

8、A

9、A

10、A、11、C

12、C

13、略

14、略

15、略

16、(1)紅色，除紅色以外的顏色(2)紅光熱效應強(3)反射白光，吸收白色以外的光

l 9

1、折射、反射

2、AO、2,、BO、3、CO、6

3、折射、反射

4、折射、虛、高、反射

5、左、偏折

6、B

7、C

8、C（9、10、11、12、13、略)

上文就是查字典物理網給您帶來的人教版初二物理寒假作業答案，希望大家及時注意并了解相關動態！!

第二篇：(蘇教版)初二上冊物理寒假作業答案參考

（蘇教版）初二上冊物理寒假作業答案參考

初中寒假作業是不是一直困擾這你呢?不用擔心，查字典物理網小編為你帶來了(蘇教版)初二上冊物理寒假作業答案參考啦，是不是很讓你興奮呢?那就快來看看吧!

1、B、2.45 2、28.2 25.1 3、2.5

4、人、河岸

5、運動

6、地面、地面、椅背、車

7、A

8、c

9、C

10、C

11、A

12、D、13、B

14、B 2

1、長、短

2、每秒行駛5米 3、6.25 22.5 4、250 5/3

5、路程、時間、V=s/t 6、0.4 便于測量時間 7、100min

8、路程、時間、速度 9、6.25m/s 交接棒所用時間少 10、80 22.22 0.4511、8 6 大于

12、(1)v=s/t=300m/5h = 60 km/h(2)v=s/t=300m/2.5h=120 km/h(3)t =t1—t2 =5h—2.5h =2.5h 3

1、振動、空氣、山間鈴響馬幫來

2、不能、能

3、快

4、不相同、空氣、耳朵

5、小于、波的、泡沫塑料屑在飛舞、在振動

6、C

7、C

8、C

9、音調、音色、音調、響度

10、頻率、快慢、頻率、高

11、次數 HZ 20---20000HZ

12、強弱、振幅、振幅、大、遠近

13、分貝、90dB

14、慢、低、大、大

15、音色、響度

16、信息、能量

17、C

18、B

19、C 20、A 4

1、A

2、C

3、A

4、A

5、A

6、C

7、空氣柱、空氣柱、頻率、空氣

8、(1)能量(2)音色、9、(1)無法正常交流(2)無法聽音色(3)感受不到聲音帶來的信息

10、(1)聲音可以在固體中傳播(2)更好的接收聲音(3)聽診器 1、36.4、=、體溫計有縮口，水銀不會回流

2、A：沒有水平放置 B：正 C：接觸了容器底 D：沒有接觸液體

3、甲、38.5 38.5

4、(1)10(2)是、有固定的凝固點

5、放、低

6、B

7、B

8、D

9、C

10、C

11、d a c b e

12、(1)溫度保持不變、(2)溫度繼續上升、(3)圖略 探究性學習

1、真空中不能傳聲

2、B

3、D 4、50 5*10000

5、D

6、折射、虛、火車、地面

7、A 8、11.268

9、吸、熔化、力、熔點

10、慣性、力

11、同意，水滴就像一個凸透鏡，把陽光會聚，使樹林燃燒，從而引起火災。

12、因為衣服只能反射它原本的顏色。

13、測得十分鐘的路程，用V=S/T的公式求出速度

1、液化、汽化

2、汽化、液化、液化、凝固、3、吸、不變、大、沸點、不同、增大

4、液化、放

5、汽化、吸 6、100℃、不變

7、(1)沸騰前，溫度不斷上升(2)沸騰時，溫度保持不變

8、(1)98、不變(2)不是標準大氣壓

9、D

10、C

11、B

12、C

13、D 14、48 C

15、快、溫度計、B、25

16、(1)0 繼續吸熱，溫度保持不變、固液共存狀態(2)沒有加上蓋子

1、熔化、升華、凝華

2、室內、凝華、放

3、升華、凝華、熔化、4、低、凝華、熔化吸熱、5、C、6、A

7、B

8、D

9、C

10、B

11、B

12、液體的表面積、液體的溫度、液體上方空氣的流速

13、碘粉、碘粉、氣體、氣化碘、升華

14、液化、汽化

15、低、溫度計、不同、冰箱、凝固

以上就是查字典物理網為大家整理的(蘇教版)初二上冊物理寒假作業答案參考，怎么樣，大家還滿意嗎?希望對大家的學習有所幫助，同時也祝大家學習進步，考試順利!

第三篇：初二寒假作業答案2013（范文模版）

初二寒假作業答案2013 初二上期（2012～2013）寒假作業答案

一：DCADCB

二：

7．（！）25（2）根號二2（3）26（4）9倍根號2（5）3分之根號3k

（6）60

8．6cm 48cm

9.169

10.3或7

11.10步

12.25cm

一：BDBCAB

二：

7．90 度

8． 5

9.8 4.8

10.120cm

11．17cm

12．（1）84 85

(2)以這些數為邊的都是三角形

三角形的最短直角邊的平方等于斜邊與直角邊的和

（三）一：BBBCBCBC

二：

9．（1）12

（2）16

（3）14 7倍根號3

（4）5倍根號2

10．60/13

11.30

12．S1=s2=s3

13．5

14．6

15．根號3：2

16．2≦x≦6

（四）一：BDBDBC

二：

7．8 6 70度 110度

8．8cm 12cm

9．55度 125度 125度

10.12

11.1.5 3 7.5 7.5

12．26度 120度

13．16

14.20

(五)一：BCCDCA

二：

7.8 6

8． 2

9． 兩 □ABCD AB∥DC AB =BC

□CDEF AB=CD=EF DE=CF

第四篇：初二寒假作業答案2013

一、單項選擇(共20小題，每小題l分，計20分)

從A、B、C、D、四個選項中選出一個可以填入句中空白處的最佳答案。

1.____ one-hour documentary takes ____ close look at the life of giant pandas in Wolong.A.An, a B.The, a C.The, / D.A, the

2.I don’t mind _______ scared, so I’ve made up my mind ______ the horror film.A.feeling, to watch B.feeling, watching C.to feel, to watch D.to feel, watching

3.There are always ______ interesting stories in the series that _____ many people watch them.A.such, so B.such, such C.so, so D.so, such 4._______ Millie was watching TV, Eddie was sleeping.A.While B.When C.As D.Since

5.Jim plays football _________ than his brother.A.more badly B.worst C.more hardly D.better 6.Very ________ people like this programe.A.few B.a few C.little D.a little

7.Nancy argued ______ Victor _____ what TV programme to watch.A.with, about B.with, for C.to, about D.to, for

8.Not only my friend but also I ______ interested in action films.We often see films together.A.be B.am C.is D.are

9.You _________ to eat snacks in the classroom.A.shouldn’t B.had better not C.oughtn’t D.needn’t

10.You have to keep quiet while watching the film, _______ you?

A.haven’t B.don’t C.didn’t D.will

11.What’s _________ at the cinema? Which isn’t suitable for the blank(空白處)? A.on B.in C.shown D.showing

12.The murder happened _______ between nine and eleven last night.A.sometime B.sometimes C.some time D.some times 13.—Have you ever seen the movie called Los Angles 2011? —Yes, but I think it’s ______.I fell asleep when I saw it.A.exciting B.boring C.bored D.excited

14.The number of chairs in the room __ ten.I’m afraid a number of chairs in the room ___ lost.A.is;is B.is;are C.are;is D.are;are

15.He was last seen _________in his office at about 7:15 p.m..A.work B.working C.to work D.worked

16.The police are planning to _________ the drawings of the suspect.A.put on B.put up C.put away D.put off 17.—What did your father ask you? —He asked me ___________.A.whom I was chatting with B.where am I with my friends C.when would I go home D.if I have finished my homework 18.The girl devoted all her time she had ______ others.A.to help B.helping C.helped D.to helping

19.一I am out of breath.I can’t go any further.一 _______!I am sure you can make it.A.No problem B.What a pity C.Not bad D.Come on

20.－Could you look after my daughter for me while I’m away? －___________.A.Yes, here you are B.You’re welcome C.Yes, please D.With pleasure

二、完形填空(共15小題；每小題l分，計15分)

閱讀下面的短文，掌握其大意，然后從各題所給的四個選項中選出一個最佳答案。I really only meant it as a joke.I wasn't trying to steal anything honestly.My friend Matthew started bringing his new cell phone to class last week.He was walking around bragging(吹噓)about it to everyone.He was saying, “My cell phone can download the newest 21 off the Internet.”Then he 22 everyone by downloading a game and starting to play it.The pictures and sound were really 23.class, he would use his cell phone to watch TV.The rest of us didn't have a phone like 25 , so we had to crowd(擁擠)around him.I was just trying to see the screen, 26 there were so many other kids that I could not see it clearly.I was getting rea lly jealous.But then yesterday, he forgot his cell phone at the end of class.He left it right on his desk.27 noticed it was there except me.I decided to teach him a lesson.I took his phone quietly off the desk, and put it in my own bag.My 28 was to give it back to him the next day.I 29 wanted to see his reaction(反應).Maybe he would stop being such a show-off.But this morning he rushed into class, screaming and yelling(吼叫).He was very 30 and almost mad.He started accusing(指責)different people of 31 his phone, but I had it in my 32 the whole time.He even started fighting with another classmate 33 Matthew was sure that person had taken it.The teacher sent them to the headmaster's office.They 34 got in a lot of trouble.Now I don't know what to 35!If I tell him that I took the cell phone, he'll think I stole it.If I don't tell him, then I really did steal it.How did I get into such a trouble? 21.A.ads B.songs C.films D.games 22.A.gave B.showed C.lent D.asked 23.A.good B.bad C.noisy D.unclear 24.A.After B.During C.In D.From 25.A.hers B.ours C.his D.theirs 26.A.and B.but C.then D.so

27.A.Everybody B.Somebody C.Anybody D.Nobody 28.A.plan B.suggestion C.dream D.action 29.A.always B.hardly C.just D.sometimes 30.A.happy B.quiet C.sad D.a ngry 31.A.losing B.stealing C.playing D.using 32.A.desk B.hand C.bag D.pocket 33.A.if B.because C.until D.though 34.A.both B.all C.neither D.none 35.A.say B.take C.see D.do

三、閱讀理解。

A.閱讀下列短文，從每小題所給的A、B、C、D四個選項中選出一個最佳答案。(共l5小題，每小題2分，計30分)A

Watching movies for your summer

Pirates of the Caribbean: Dead Man’s Chest 加勒比海盜：聚魂棺 Captain Jack Sparrow again appears on the screen.This time, he finds himself in a heavy debt(債)to Davy Jones.The only way to get out of it is to find the Dead Man’s Chest.He asks his old fiends for help and they start out to the sea.Garfield: A Tale of Two Kitties 加菲貓: 雙貓記

Hello, Garfield will meet you again on the screen.This time, America’s favourite cat Garfield travels to London.Garfield gets lost on the way.However, he enjoys his new life in his new home.But danger is near him… Superman Returns 超人歸來

How exciting it is to see Superman on the screen again!Like before, he is again saving the world.But his enemy, Lax Luther, is still planning to kill him so that he can control the world.36.What does the underlined word “it” refer to? A.His debt.B.His old friend.C.His new life.D.The Dead Man’s Chest.37.Which of the following doesn’t happen to Garfield?

A.He gets lost.B.He has his new home and enjoys his new life.C.Danger is waiting for him.D.He is in a heavy debt.38.Why does Lax Luther plan to kill Superman? A.Because he wants to save the world.B.Because he wants to enjoy his new life.C.Because he wants to control the world.D.Because he wants to control Superman.B

After Mr.and Ms.Smith spent a happy morning at the zoo with Joe, their four-year-old grandson, they stopped at a restaurant and then went into it for lunch.When the waiter passed them some menus，Mr.Smith reached into his pocket for his glasses.He was disappointed(失望的)to find that they were lost.“I know where your glasses are, Grandpa, ” said the grandson.“Where?” asked Mr.Smith happily.“They are at the zoo.” Joe answered.“When you took me off the train near the elephants，they fell out of your pocket.”

Mr．Smith was a little angry and he asked，“Joe，if you saw my glasses fall out of my shirt，why didn’t you tell me?”

“Well，Grandpa,” said Joe, “after you put your foot on them, I didn’t think you wanted them any more.”

39.The glasses fell out of the pocket when ________.A.Mr.Smith got into the zoo

B.Mr.Smith hurried into the restaurant

C.Joe was taken off the train near the elephants

D.they were getting on the train

40.“Menu” in the article means___________ in Chinese.A.賬單 B.訂單 C.菜單 D.名單

41.Which of the following is TRUE?

A.Joe didn’t know where his grandpa's glasses were.B.Mr.Smith didn’t get his glasses back at last.C.Mr.Smith got his glasses back at last.D.Mr.Smith was glad with what his grandson did.C

My teenage son Karl became withdrawn after his father died.As a single parent, I tried to do my best to talk to him.But the more I tried, the more he pulled away.When his report card arrived during his junior year, it said that he had been absent(缺席的)95 times from classes and had six falling grades for the year.At this rate he would never graduate(畢業), I sent him to the school adviser, and I even begged(乞求)him.Nothing worked.One night I felt so powerless that I got down on my knees(膝蓋)and pleaded(懇求)for help.“Please God, I can’t do anything more for my son.I’m at the end of my rope(繩子).I’m giving the whole thing up to you.”

I was at work when I got a phone call.A man introduced himself as the headmaster.“I want to talk to you about Karl’s absences.” Before he could say another word, I choked up and all my disappointment and sadness over Karl came pouring out into the ears of this stranger.“I love my son but I just don’t know what to do.I’ve tried everything to get Karl to go back to school and nothing has worked.It’s out of my hands.“For a moment there was silence on the other end of the line.The headmaster seriously said, “Thank you for your time”, and hung up.Karl’s next report card showed a marked improvement in his grades.Finally, he even made the honor roll.In his fourth year, I attended a parent-teacher meeting with Karl.I noticed that his teachers were astonished at the way he had turned himself around.On our way home, he said, “Mum, remember that call from the headmaster last year?” I nodded.“That was me.I thought I’d play a joke but when I heard what you said, it really hit me how much I was hurting you.That’s when I knew I had to make you proud.”

42.Which of the following has the similar meaning to the underlined word “withdrawn”? A.Quiet and lonely.B.Relaxed and excited.C.Active and lively.D.Happy and easy-going.43.When the mother said “It’s out of my hands” to the headmaster, she meant that she _______.A.didn’t know what to do about her son B.would drive her son away from the house C.had no money to support the family D.would have to hang up 44.Who was it that telephoned Karl’s mother that day? A.The headmaster B.The school adviser C.Karl himself D.The passage doesn’t tell us 45.From the passage we can learn that ______.A.children in single-parent families always have mental problems

B.mother’s love plays an important role in teenagers’ life

C.parents should give their children everything that they need

D.school education still works well without the support from parents D

Microblog(微博)is used by more and more people in China.Do you know what it is?

Micorblog makes the people around the world to know each other better.It helps people to find the information that they need more easily, also to get some information about the world they did not know before.Many famous people are using microblog now, including singers, TV hosts and artists.The first day of Chinese New Year in 2010，people on Sina Microblog sent 9873 microblogs to wish somebody a Happy New Year.Yao Chen became the queen(王后)of microblog because her microblog has over 1.3 million followers;Li Yuchun sent a microblog and got 11760 comments(評論)within 24 hours;Cai Kangyong, who is a famous TV host and famous writer in Taiwan, has 15143 more followers within 24 hours.Why is microblog so popular? The most important reason is that it is convenient(方便的).People need not use too much time to write the articles to express(表達)their feeling.They can write at most 140 words, and then send it through computers or mobile phones onto the microblog.As s oon as they send it, their followers will know.They can use it anytime, anywhere.Many of my friends use microblog to share things with others.They can talk about what they see, hear and think in a sentence or a photo.Also, they can follow their friends’ or their favorite stars’ microblogs.They can even join in any discussion of anything.Microblog is very hit now!

Have you microblog today?

46.According to the passage, ________________.A.microblog can make people around the world to know each other better

B.you can write as many words as you like in your microblog

C.microblog is not very popular in China

D.microblog is only used by people under 18

47.Yao Chen became the queen of microblog because _______________.A.she sent a microblog and got 11760 comments

B.she is a famous actress in China

C.her blog has over 1.3 million followers

D.she has 15143 more followers within 24 hours

48.Microblog is very popular.The most important reason is that ____________________.A.many famous people are using it now

B.it is convenient

C.people can share their photos with others D.people can join in any discussion

49.What can we do on the microblog?

A.We can join in any discussion of anything.B.We can only get some information about the world we had known before.C.We can write at least 140 words, and then send it through computers onto the microblog.D.We can get answers to any of our questions.50.We can probably find this article in _______________.A.a children’s story book B.a clothing magazine

C.a newspaper D.an exercise book 第Ⅱ卷（非選擇題，55分）

B 閱讀下列短文，根據短文內容完成表格中所缺信息，每空一詞。(共l0題，每題l分，計l0分)We all need a healthy environment, but we produce waster every day and it does harm to our environment.Though we are young, we can still do something to help.In fact, even the simplest everyday activities can make a real difference to the environment.Here are some ideas for you to live a green life.Remember these three words;reduce, reuse and recycle（減量、再使用和再循環）.Reduce means “use less”.Don't waste things.This saves money and reduces pollution and waste going into the environment.Before we buy something new, think if it is really necessary or maybe the old one will be just as good!When we do buy things, choose local products if possible, and try not to buy too many things from abroad.xkb1.com

Reuse means “use again”.Use things for as long as possible.When we buy things, make sure that they last a long time.We should take care of them so that they will last, and we should repair them if we can instead of throwing them away and buying new ones.Don't use a paper cup or a paper bag.It's better to use a china cup and a lunch box because you can use them again.Recycle means “change things into something else”.Although it takes energy to change something into something else, it's better than throwing things away or burning them.Find out what can be recycled in your neighbourhood and take part in recycling programmes.We should also buy products made from recycled materials, such as recycled paper, to help save trees.Title: 51 to Live a Green Life

We produce waste every day and it is 52 to us.We can do something to help.Ideas Does Don'ts To 53 Use less

* Try to save something * Don't buy too many things from foreign 54.To reuse Use 55

* Use things for us long as possible.* Buy things that last long.* Take care of things or 56 the old things.* Don't use 57 cups or bags.To recycle Change things into something 58 * Join in recycling programmes.* Buy 59 made from recycled materials.Don't 60 things away or bu rn them.四、詞匯運用(共25小題，每小題l分，計25分)A.根據句意和提示寫出單詞，完成句子。(每空一詞)

61.The _________(每周的)newspaper is sent to you every Sunday.62.We should ________(面對)the difficulties bravely.63.Cheng Long is _________(認為)as a Kungfu superstar.64.Some bad websites have a bad ________(影響)on teenagers.65.The work is ________(超出)my ability.I’m afraid I can’t finish it by myself.66.Zhang Yimou is one of the most famous _______(direct)in China.67.The tigers are _________(disappear)faster than you think.68.The story has a surprising ________(end).69.When he caught up with the bus, he breathed ________(heavy).70.The man’s _________(die)was a great loss of his family.71.Every year the Spring Festival Gala(春晚)is covered l___ on the eve of Chinese New Year.72.Please knock at the door before e__________ the office.73.He i______ that he was at another place at the time of the crime and that he was not guilty.74.Qian Xuesen put all his e___________ into developing Atomic Bombs(原子彈).75.He answered the most questions in the game show and won a great p__________.B.根據短文內容及首字母提示完成短文。（每空一詞）

Happiness is for everyone.In f 76 , happiness is always around you if you put your heart into it.When you are in t 77 at school, your friends will help you;when you study hard at your lessons, your parents are always taking good c 78 of your life and your health;when you get s 79 , your friends will congratulate you;when you do something w 80 , people around you will help you to correct(糾正)it.And when you do something g ood to o 81 , you will feel happy, too.All these are your happiness.If you notice a bit of them, you can find that happiness is always around you.Happiness is not the s 82 as money, it's a feeling of your heart.When you are p 83 , you can also be very happy, because you have something else that can't be bought with money.When you meet with difficulties, you can say loudly you are very happy, because you have more chances to challenge(挑戰)y 84.So you cannot always say you are poor and you have bad luck.If you take every chance you get, you can be a happy and l 85 person.五、寫作。(計20分)

A.根據所給提示將下列各句譯成英語。(共5小題，每小題2分；計10分)86.你給我提了這么多寶貴的建議真是太好了。

It’s really _____________________ to offer me _________________________advice.87.周冬雨在這部電影中扮演主角之后立即成名了。

Zhou Dongyu ______________________after she ____________________in the film.88.請寫下答案并且發短消息到95088.Please ________________ the answers and __________________________ to 95088.89.他家很窮，所以他很小的時候就開始謀生。

His family was poor, so he began to _________________ at ____________________.90.當我到達電影院時，電影已經放了十分鐘了。

The film ___________________for ten minutes when I ______________ the cine ma.B.書面表達。(共一題，計10分)

新的一年又來到了，我們又長大了一歲，過去的一年我們有什么收獲，在新的一年又有什么打算？根據下列提示寫一篇短文。

1.我盡力學習，并且取得了更好的成績。我養成一些好習慣，比如…… 2.我對家長懂得感恩，我不亂花錢，對他們誠實，經常幫他們做家務活。3.我對老師有禮貌，我感激他們辛勤工作，并且總認真聽講認真作業。

4.大約五個月后我要參加中考（exams for high school entrance）。我要做好充分準備，把中考考好。

5.我還要……

要求： 1.詞數：80詞左右;2.開頭已給出，不計入總詞數。

Another new year comes again.I’m one year older.Last year, _________________________________ _____________________

第五篇：初二物理寒假作業

初二物理寒假作業

完成了小學階段的學習，進入緊張的初中階段。這篇初二物理寒假作業，是查字典物理網特地為大家整理的，歡迎閱讀~

一、選擇題

1.關于平衡力，下列說法正確的是()

A.物體在平衡力作用下一定保持靜止狀態。B.物體在平衡力作用下一定處于勻速直線運動狀態

C.相互平衡的兩個力一定是性質相同的力 D.平衡力一定是作用在同一物體上的兩個力

2.物體受兩個力的作用，由下面哪種情況可以判斷這兩個力一定是一對平衡力()

A.物體保持勻速圓周運動 B.物體保持速度大小不變的直線運動 C.物體保持方向不變的直線運動 D.物體保持速度大小、方向都不變的直線運動

3.直升機在空中懸停時，之所以相對地面靜止不動：是因為直升機()

A.受到空氣的舉力 B.受到地球的重力 C.受平衡力的作用 D.受到的舉力大于重力

4.重力相等的甲、乙兩個物體，分別在拉力F甲、F乙的作用下以2米/秒和1米/秒的速度勻速上升，則有()。

A.F甲F乙 B.F甲=F乙 C.F甲

5.下列現象中，物體受到非平衡力作用的是()

A.停留在水中某一深處的潛水艇B.勻速上升的直升飛機

C.沿田徑彎道在勻速奔跑的運動員D.在平直的高速公路上勻速行駛的汽車

6.在下列圖示中，表示物體受到的力是平衡力的圖是()。

7.如圖所示的鐵球，在被壓縮的彈簧上面能保持靜止不動的原因是()

A.重力的作用 B.彈簧對它的支持力 C.地面對它的支持力 D.平衡力的作用

8.一個物體受到大小均為10N的一對平衡力的作用而做勻速直線運動，如果這對平衡力突然同時減小到5N，則物體()

A.速度減小B.按減小后的速度做勻速直線運動 C.仍按原來的速度做勻速直線運動 D.停止運動

9.用兩只手在豎直方向拉一個彈簧秤，一只手向上拉秤上端，另-只手向下拉秤下端，這時彈簧秤的示數是8牛頓，若彈簧秤本身重力不考慮，則下列判斷正確的是()

A.兩只手各甩4書頓的拉力 B.上面那只手用8牛頓的拉力，下面那只手沒用力

C.下面那只手用8牛頓的拉力，上面那只手沒用力 D.兩只手各用8牛頓的拉力

10.一輛重4105牛的汽車，在水平公路上勻速前進，它受到的阻力是5 104牛，則汽車受到的牽引力是().A.4105牛 B.5 104牛 C.4.5105牛 D.3.5105牛

11.起重機吊著5 104牛的物體，加速上升時，鋼繩對物體的拉力()

A.大于5104牛 B.等于5104牛 C.小于5104牛 D.不可能作加速運動

12.一個物體在三要素完全相同的兩個力的作用下，則物體將()

A.一定作勻速直線運動 B.一定靜止狀態 C.不可能做勻速直線運動 D.無法判斷

13.用手握住瓶子的頸部使其懸空，瓶子不會掉下來，這是因為()

A.手對瓶的摩擦力與瓶的重力平衡 B.手對瓶的摩擦力與手對瓶的壓力平衡

C.手對瓶的壓力與瓶頸對手的壓力平衡 D.手對瓶頸的壓力與瓶的重力平衡

14.一物體重為800牛，當它從空中勻速下落時，它所受的空氣阻力.f的大小()

A.f800牛 B.f800牛 C.f=800牛 D.無法確定

15.物體在平衡力作用下，將使它()

A.從靜止開始運動 B.從運動到停下來 C.運動狀態要發生改變 D.運動狀態不發生改變

16.兩架完全相同的直升機，甲機以5米/秒的速度勻速上升，乙機以4米/秒的速度勻速下降，不計空氣的阻力，則()

A.甲機受到的舉力較大 B.乙機受到的舉力較大

C.甲、乙兩機受的舉力一樣大 D.條件不足，無法判斷 17.放在水平桌面上的書所受力中，屬于平衡力的是 [ ]

A.書對桌面的壓力與書所受的重力;B.書對桌面的壓力與桌面對書的支持力;

C.書所受的重力與桌面對書的支持力;D.書對桌面的壓力加上書的重力與桌面對書的支持力.18.用49牛的水平力把質量是1.5千克的木塊緊壓在豎直的墻上，這時木塊對墻的壓力是 [ ]

A.50.5牛;B.49牛;C.64牛;D.15牛.19、下列各物體中，受力不平衡的物體是()

A、地球同步衛星 B、勻速豎直上升的直升飛機

C、靜止在水平桌面上的課本。D、在平直鐵軌上勻速直線行駛的火車

20、下列說法中正確的是 [ ] A.物體處于靜止或勻速直線運動時，一定只受兩個力作用;

B.物體如果有外力作用，不可能處于勻速直線運動和靜止狀態;

C.兩個力作用在一條直線上，大小相等，方向相反，這兩個力一定是平衡的;

D一個物體的運動方向在不斷改變，它受到的力一定不平衡.21.重80牛的物體放在水平桌面上，滑動時受到的阻力是12牛，要使物體作勻速直線運動，所需的水平拉力是 [ ]

A.12牛;B.68牛;C.80牛;D.92牛.查字典物理網給您帶來的初二物理寒假作業，希望可以更好的幫助到您！