They didn’t know how garbage is recycled.——青夏教育精英家教网—

摘要： They didn’t know how garbage is recycled.

网址：http://m.1010jiajiao.com/timu_id_2316202[举报]

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

Make sure your hands are dirty.

Rub your hands together until you feel the heat of your hands.

Now, use soap and water to get your hands very slippery(滑的).

Try to make friction happen while your hands are slippery.

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?

Friction happens when you stop your fast running bike.

Ancient people made fire 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 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.What does the word “friction” in this text mean in Chinese????????

A.摩擦????????????? ????????????? B. 冷却??????? C. 膨胀????????????? ????????????? ????? D.震动

3.___________ is not an example of friction.

A. Bike riding????????????? B. Car driving??? C. Hands rubbing????????????? ? D.Friction discovering

4.What’s the last column(栏目)?

A. THINK IT OVER!????????????? ????????????? ????????????? ????????????? ?? B. WHAT HAPPENED?

C.EVERYDAY ACTION:????????????? D. WORK WITH PARENTS

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make health I while open well from surprise fight if

Dear Ronny,
　　Years ago you came to me for help. You said, "Grandpa, how could you do so   【小题1】  in your life? You're still active to your life, but I'm already tired of   【小题2】 for my life. How can I get the same thing that you've got?"
　　I didn't know what to say to you. But when I know there are few days left for me, I tell   【小题3】  that I should give you an answer. So here is what I believe.
First, you should know that life is filled(充满) with   【小题4】 , and many of them are good ones. If you don't keep your eyes   【小题5】 , you'll miss a number of good surprises in your life.　　
　　When you meet challenges, don’t run away, just welcome them. They'll make you stronger,   【小题6】  and cleverer than you were before. When you do something wrong, you should be thankful for the things it gave you. And then, you should use this lesson to help you   【小题7】  your dream come true. It's also important to decide what you want. Then keep your dream , work hard for it, and be ready to receive it. It will come true more quickly.
　　And always follow the rules, even the little ones. When you follow the rules, life will work well.   【小题8】  you think you can live without the rules, you're only fooling(愚弄) yourself.
　　There will be more chances   【小题9】  you are growing up. So you have to be brave enough to move from a known place to an unknown place. Life isn't just like climbing one mountain. It is also a part of your life to move   【小题10】  one top to the next. If you rest for a too long time, you may fail at last. Leave the past in the past. Climb the next mountain and enjoy the fight in your life.
　　The person that can win is the one who wants to win.
Love always,
　　Grandpa

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词语填空 10%

make health I while open well from surprise fight if

Dear Ronny,

　　Years ago you came to me for help. You said, "Grandpa, how could you do so 1. in your life? You're still active to your life, but I'm already tired of 2. for my life. How can I get the same thing that you've got?"

　　I didn't know what to say to you. But when I know there are few days left for me, I tell 3. that I should give you an answer. So here is what I believe.

First, you should know that life is filled(充满) with 4. , and many of them are good ones. If you don't keep your eyes 5. , you'll miss a number of good surprises in your life.　　

　　When you meet challenges, don’t run away, just welcome them. They'll make you stronger, 6. and cleverer than you were before. When you do something wrong, you should be thankful for the things it gave you. And then, you should use this lesson to help you 7. your dream come true. It's also important to decide what you want. Then keep your dream , work hard for it, and be ready to receive it. It will come true more quickly.

　　And always follow the rules, even the little ones. When you follow the rules, life will work well. 8. you think you can live without the rules, you're only fooling(愚弄) yourself.

　　There will be more chances 9. you are growing up. So you have to be brave enough to move from a known place to an unknown place. Life isn't just like climbing one mountain. It is also a part of your life to move 10. one top to the next. If you rest for a too long time, you may fail at last. Leave the past in the past. Climb the next mountain and enjoy the fight in your life.

　　The person that can win is the one who wants to win.

Love always,

　　Grandpa

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阅读理解。

　　In the mid 1990's, people started doing business on the Internet．At that time, there were two kinds of companies．First, there were traditional companies which sold things in stores．Then, there were Internet companies which didn't have stores; they sold things only over the Net．

　　Traditional companies didn't want to lose any business．Quickly, they created their own websites and began selling things over the Net．These are the so-called" brick and click" companies．Many stores are made of brick, and you click on your mouse to buy things with your computer．That’s where the name" brick and click" comes from．

　　By the late 1990's, e-businesses like Amazon．com, Buy．com, and eToys．com were in trouble．Their profits were not very high, and there was a lot of competition．Many of these businesses lost a lot of money, and in 2000, manye－businesses were out of business

　　Why are brick and click companies, like Barnes and Noble, Toys RUs, and Walmart 50 successful? First, many customers know and trust their names．Their websites, like Walmart．com, are easy to remember．These companies also have a lot of experience．They know how to run a successful business．

　　In the world of e-commerce(电子商务), companies are fighting for every dollar and every customer．Will brick and click companies win the war ? only time will tell．

(1)

Many traditional companies created their own websites in _________
[　　]
A．	the early l990’s
B．	the mid l990’s
C．	the late l990’s
D．	1990’s

(2)

Why were Internet companies in a lot of trouble in the late 1990's?
[　　]
A．	Competition was heavy
B．	Their websites were bad
C．	They didn't know what to sell
D．	Their profits were high

(3)

People like buying from brick and click companies because _________
[　　]
A．	their names are hard to remember
B．	they have nice websites
C．	they are cheap
D．	people trust them

(4)

What does "win the war" in the passage mean?
[　　]
A．	Quit doing business and become a soldier．
B．	Lose the most customers
C．	Be the most successful．
D．	Win a game．

(5)

Which would be a brick and click company?
[　　]
A．	A clothing company with no website．
B．	A bookseller with five stores and an Internet site．
C．	A video seller with a big website but no stores．
D．	A restaurant．

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Doctors couldn’t say what was wrong ________ they didn’t know what kind of snake it was．

[　　]

A．so

B．because

C．or

D．but

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