Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren't very smooth rub together to make heat energy. The faster you rub two things together,the more friction(and heat) you can make. Let's discover friction!WHAT YOU'LL NEED:
. Soap. Water. Your hands！
WHAT TO DO:
1. Make sure your hands are dry.
2. Rub your hands together until you feel the heat of your hands.
3. Now,use soap and water to get your hands very slippery (滑的) .
4. Try to make friction happen while your hands are slippery.
5. Please write down what has happened. LET'S TALK!
Friction is an energy that happens when two things rub together. When friction happens,it makes heat!When your hands are slippery,they won't make very much friction and your hands won't get so hot. DID YOU KNOW?
1. Friction happens when you stop your fast running bike.
2. Ancient people made fires by rubbing two pieces of wood together.
Friction happened though they didn't know it.
？
Friction is everywhere. Have you ever noticed situations where friction is happening? If not,ask your parents to take you out in a car. If it is not too hot,touch the tires (轮胎) of the car before and after a short drive to see how much warmer they get from friction.
( ) 1. This text is most probably .
A. a science report
B. a car advertisement
C. a rubbing introduction
D. a chemistry programme
( ) 2. You'd better make your hands to get heat when you rub them.
A. slippery B. dry C. wet D. smooth
( ) 3. What does the word "friction" in this text mean in Chinese?
A. 摩擦 B. 冷却 C. 膨胀 D. 震动
( ) 4. is NOT an example of friction.
A. Bike riding B. Car driving
C. Hands rubbing D. Friction discovering
( ) 5. What's the last column (栏目) ?
A. THINK IT OVER! B. WHAT HAPPENED?
C. EVERTDAY ACTION D. WORK WITH PARENTS！
鸿图图书寒假作业假期作业吉林大学出版社系列答案科目：初中英语 来源： 题型：
( ) 17. 一Do you think it will be cool tomorrow?
― . It has been too hot for a week.
A. I'm afraid so B. I hope so
C. I'd like so D. Of course not
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科目：初中英语 来源： 题型：
Dear sir,
I'm writing to you about my staying at your hotel. My wife and I (1) on Saturday,May 15 and stayed for a week. Though we were treated (2) and found the service excellent,we think there are one or two matters we (3) bring your attention.
1. We had hoped for a nice (4) from our busy work lives,and your ad said, "comfortable and quiet". We went there to enjoy ourselves,however,we were (5) to find that repairs were sometimes needed. And is it (6) necessary to start the repair work so early in the morning?
2. We had hoped to (7) in your "wonderful pool". To our disappointment,we found that it was closed for the whole time of our stay.
I (8) you do not mind me writing to you (9) these things,and I would be happy if you could give me some explanations. As I (10) at the start,it is a pity,but your service is so well in other fields.
( ) 1. A. left B. arrived C. went D. returned
( ) 2. A. badly B. equal C. good D. well
( ) 3. A. should B. can C. may D. will
( ) 4. A. stop B. holiday C. break D. sleep
( ) 5. A. surprised B. happy C. glad D. sad
( ) 6. A. true B. as C. too D. really
( ) 7. A. drop B. swim C. live D. drink
( ) 8. A. wish B. want C. need D. hope
( ) 9. A. with B. for C. about D. at
( ) 10. A. told B. spoke C. said D. noticed
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科目：初中英语 来源： 题型：
One day,when some government officials were rebuilding a barn (谷仓) ，they found a mouse hole in a corner and used smoke to force the mice inside the hole to come out. A while later they indeed saw mice running out,one after another. Then,everyone thought that all the mice had escaped. But just as they began to clean up,they saw two mice squeezing (挤) out at the mouth of the hole. With some efforts,the mice finally got out. However,it was strange that after they came out of the hole,they did not run away immediately. Instead,one chased after the other near the mouth of the hole. It seemed that one was trying to bite (咬) the tail of the other.
Everyone was puzzled,so they stepped nearer to take a look. They found out that one of the mice was blind and could not see anything,and the other was trying to make the blind mouse bite on his tail so that he could pull the blind one with him to escape.
Seeing what was happening,everyone was speechless and lost in thought. During the meal time,the group of people sat down in a circle and started to chat about the two mice.
One serious American official said, "I think the relationship between those two mice was that of a king and his guard."The others thought for a while and said, "That was why!"
A smart Frenchman said , " I think the relationship between those two mice was that of a husband and his wife."Again the others thought for a while,and all felt it made sense.
A Japanese said, "I think the relationship between those two mice was that of a mother and her son. " Once again the others thought for a while,and felt this was more reasonable. So they expressed agreement another time.
At that moment,one Chinese asked , " Why did those two mice have to have a certain relationship?"
Suddenly,the group looked at the Chinese and remained speechless. The American official,the Frenchman and the Japanese who had spoken earlier all lowered their heads in shame,and did not dare to answer.
In fact,the true love is not built on friendship,loyalty or blood relationship. Instead,it is based on no relationship.
( ) 1. Neither of the two mice ran away immediately because .
A. one was biting the other
B. the mouth of the hole was too small
C. they were not afraid of smoke
D. one was trying to help the other
( ) 2. Why did they lower their heads in shame according to the passage?
A. They did not dare to answer.
B. They had mistaken the relationship of the mice.
C. They regretted driving the poor blind mouse away.
D. They did not express themselves well.
( ) 3. It is clear that .A. all the mice came out of the hole easily
B. the people understood the relationship of the mice differently
C. the people wanted to kill the mice with smoke
D. the people knew one of the mice was blind at the first sight
( ) 4. "It made sense" probably means .
A. it was correct B. it was strange
C. it was funny D. it was sweet
( ) 5. The best title for the passage is .
A. Two Lovely Mice B. Help Produces Love
C. Friends in Need D. Love Is All
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科目：初中英语 来源： 题型：
I've loved my mother's desk since I was just tall enough to sit above the top of it as Mother sat writing letters. Standing by her chair,looking at the ink bottle,pens,and white paper,I decided that the act of writing must be a most wonderful thing in the world.
Years later,during her final illness,Mother kept different things for my sister and brother. "But the desk," she said again, "is for Elizabeth".
I never saw her angry,never saw her cry. I knew she loved me; she showed it in action. But as a young girl,I wanted to have heart-to-heart talks between mother and daughter.
They never happened. And a gulf opened between us. I was "too emotional (易动感情的) ”. But she lived "on the surface (表面) ".
As years passed and I had my own family,I loved my mother and thanked her for our happy family. I wrote to her in careful words and asked her to let me know in any way she chose that she did forgive me.
I posted the letter and waited for her answer. None came.
My hope turned to disappointment,then little interest,and finally,peace―it seemed that nothing could ever happen. I couldn't be sure that the letter had even got to Mother. I only knew that I had written it,and I could stop trying to make her into someone she was not.
But the present of her desk told me,as she'd never been able to,that she was pleased that writing was my chosen work. I cleaned the desk carefully and found some papers inside―a photo of my father and a onepage letter,folded and refolded many times. It was my letter：
"In any way you choose,Mother,you always choose the act that speaks louder than words".
( ) 1. The writer began to love her mother's desk .
A. after Mother died B. before she became a writer
C. when she was a child D. when Mother gave it to her
( ) 2. The passage shows that .
A. Mother was cold on the surface but kind in her heart to her daughter
B. Mother was too serious about her daughter in words
C. Mother cared much about her daughter in careful words
D. Mother wrote to her daughter in careful words
( ) 3. The word "gulf" in the passage means .
A. deep understanding between the old and the young
B. different ideas between mother and daughter
C. free talks between mother and daughter
D. part of the sea going far in land
( ) 4. What did Mother do with her daughter's letter asking for forgiveness?
A. She had never received the letter.
B. For years,she often talked about the letter.
C. She didn't forgive her daughter at all in all her life.
D. She read the letter again and again till she died.
( ) 5. What's the best title of the passage?
A. My Letter to Mother B. Mother and Children
C. My Mother's Desk D. Talks between Mother and Me
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科目：初中英语 来源： 题型：
Have you ever seen the film Traveling Bird? In the film,groups of birds fly high above the sky and cross the way above snow,rivers,fields,sea and grassland. Fm sure you will love the beautiful pictures when you see the film.
But you may not feel so good if you have learnt about bird flu (禽流感) from TV or on the Internet. Some governments had to kill chickens in their cities. A large mumber of chickens and even some people died in Asia,and nearly 8,500 birds died in Russia because of bird flu.
Chickens can get bird flu from the droppings (粪便) of the passing birds. It is not so difficult to control the chickens in cages or on farms. But it is much more difficult to control the birds in the sky.
Luckily,scientists have found a medicine for bird flu. But the virus (病毒) can change easily and quickly. So bird flu is still a serious problem we must face.
( ) 1. We know how birds get bird flu from the film Traveling Bird.
( ) 2. Not only birds and chickens but also man can get bird flu.
( ) 3. The droppings of the passing birds cannot cause bird flu.
( ) 4. It is easier to control chickens than to control flying birds.
( ) 5. Scientists have found the medicine,so we needn't worry about bird flu any more.
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科目：初中英语 来源： 题型：
One day,a very rich family went on a trip to the c (1) The father wanted to s (2) his son how poor people lived,so they s (3) a day and a night on the farm of a very poor family.
When they got b (4) from their trip,the father asked his son, "My dear son,how was the trip?" "Very good,dad!""Did you see how poor people lived?" the father asked. "Yeah!" "And what did you 1 (5) ？" The son answered, "We have a dog at home,and they have four. We have a pool that is in the m (6) of the garden,and they have a river that has no e (7) We have very e (8) lamps in the garden,and they have the stars."
When the little boy f (9) his father w (10) speechless.
1. c 2. s 3. s 4. b 5. 1 6. m 7. e 8. e 9. f 10. w
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科目：初中英语 来源： 题型：
EDITOR(编辑) WANTED
Editor needed to direct the work of New Music Magazine. At least two years editorial experience needed. Hours： 8： 00 a. m. to 5： 00 p. m. . Some overtime required. Send your personal information to: P. O. Box 213,Fairview,IN. 46243.
BANK MANAGER
Town Bank is looking for a bank manager to head its downtown branch (分行) .A person with 5 +years’ experience. Working Hours： 8:30 a. m. to 5:30 p. m. Mail to < newbank@ gol. com > for more information.
TEACHERS NEEDED
Language Centre needs experienced teachers for its new English teaching program. PT/ET(兼/ 专职) positions available. No more than 25 teaching hours a week. AM/PM changes. Teachers with background in computer skills preferred (优先) .Tel： 567-1243.
NURSES IN NEED
Child Care Centre serves children from 3 to 6 years of age. It provides care five days a week,and is open about ten hours a day. It is in great need of nurses with the experience of guiding (指导) different activities such as indoor and outdoor games. Call at 432-3745 or visit our website：www. vps. msu. edu/cfcr.
( ) 1. A person with of experience is needed to head the bank.
A. at least two years B. twentyfive years
C. three to six years D. more than five years
( ) 2. You should work for if you become an editor of the magazine.
A. just nine hours a day B. no less than nine hours a day
C. about ten hours a day D. less than 25 hours a week
( ) 3. If you want to be a teacher,you can for more information.
A. call at 567-1243 B. mail to < newbank@ gol. com >
C. phone 432-3745 D. write to P. O. Box 213,Fairview
( ) 4. You need to have the experience of directing different activities to .
A. be an editor of the music magazine B. head a bank branch of Town Bank
C. teach English in Language Centre D. work as a nurse in Child Care Centre
( ) 5. Which of the following is NOT true according to the passage?
A. Child Care Centre doesn't provide care for children of all ages.
B. Teachers are wanted to teach English in the Language Centre.
C. One with computer skills will be preferred to head the bank.
D. Your own information is needed for the position of the editor.
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科目：初中英语 来源： 题型：
Making friends is a skill. Like most skills,it improves with practice. If you want to meet people and make friends,you must be willing to take some action. You must first go where there are people. You won't make friends staying home alone.
Join a club or a group. Talking with those who like the same things as you do is much easier. Or join someone in some activity.
Many people are nervous when talking to new people. After all,meeting strangers means facing the unknown. And it's human nature to feel a bit uncomfortable about the unknown.
Most of our fears about dealing with new people come from doubts about ourselves. We imagine other people are giving an opinion about us―finding us too tall or too short,too this or too that. But don't forget that they must be feeling the same way. Try to accept (接受) yourself as you are,and try to put the other person at ease (不拘束) .You'll both feel more comfortable.
Try to keep selfconfident (自信) even when you don't feel that way when you enter a room full of strangers,such as a new classroom. Walk tall (趾高气扬) and straight,and look directly at other people and smile.
If you see someone you'd like to speak to,say something. Don't wait for the other person to start a conversation.
Just meeting someone new does not mean that you will make friends with that person―friendship is based on each other's liking and "give and take". It takes time and efforts to develop. And there are things that keep a new friendship from growing.
( ) 1. If you want to meet people and make friends,what should you do?
A. Join a club or a group.
B. Talk with those who like the same things.
C. Join someone in some activity.
D. All of the above.
( ) 2. In the sentence " After all,meeting strangers means facing the unknown. " ，the word "unknown" means .
A. things that are not known about B. without somebody liking
C. unfriendly D. unpleasant
( ) 3. How do you feel more comfortable when you are with new people?
A. Shake hands with others.
B. Accept yourself as you are,and put the other at ease.
C. Don't talk with those whom you don't like.
D. Walk tall and straight.
( ) 4. If you'd like to speak to someone,what should you do?
A. You should wait until the person says something.
B. You should stay home alone.
C. You should cough until the person notices you.
D. You should say something at first.
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