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  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 (輪胎) 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. 冷卻   C. 膨脹   D. 震動

(   ) 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 (欄目) ?

   A. THINK IT OVER! B. WHAT HAPPENED?

   C. EVERTDAY ACTION   D. WORK WITH PARENTS!

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科目:初中英語 來源: 題型:

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

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(   ) 3. A. should   B. can   C. may   D. will

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  One day,when some government officials were rebuilding a barn (谷倉) ,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 (擠) 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.

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  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         .

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(   ) 5. The best title for the passage is       .

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  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.

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                EDITOR(編輯) 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.

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科目:初中英語 來源: 題型:

  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.

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(   ) 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.

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   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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