A famous teacher was speaking to the students at our school. He began his lesson by holding up a ￥100 bill. Then he said to the three hundred students， “Who would like this ￥100 bill？” The students began to put up their hands at once.
Then he said， “I am going to give this ￥100 to one of you， but first， let me do this.” He then made the bill into a ball. Then he said， “Who wants it now？” The hands went back into the air.
“Well，” he said， “What if I do this？” and he dropped it on the floor and stepped on it. He picked up the dirty， crumpled bill and said， “Who still wants it？” Hands went back into the air.
“My friends，” he said， “you have learned a valua-ble lesson today. No matter  what I did to the money， you still wanted it because it did not go down in value （价值）。 It was still worth ￥ l00！”
Many times in our lives， we are dropped， crum-pled， and stepped on by the chances we take and the things that happen to us. We feel as if we are worth nothing. But remember， no matter what has happened to you， you will never lose your value： you are always valuable to those people who love you. Your value doesn‘t come from what you do or whom you know， but WHO YOU ARE.
You are special and valuable. Don‘t ever forget it！
【小题1】Even though it was dirty， the money _______.

A．still went up in value	B．was worth nothing
C．didn‘t go down in value	D．was still ours

【小题2】We are always valuable to the people _______.

A．who pay us	B．who call us
C．who hate us	D．who love us

【小题3】The sentence “Hands went back into the air” means “_______”。

A．the students put up their hands again

B．the students put down their hands

C．the students put their hands behind their backs again

D．the students put their hands in front of them

【小题4】 Why did the famous teacher use a ￥100 bill at his lesson？

A．Because he wanted to make the bill into a ball.

B．Because he used to drop a bill on the floor and stepped on it.

C．Because he was going to give the bill to one of his students.

D．Because he wanted to make the students know what value was.

Car accidents happen everywhere every day and are the main cause of injury in the United States. In order to control the increasing（增长） accidents, many states have passed tough laws. Also, car manufacturers（制造商） have been trying to make safer cars to save lives.
However, as there are more and more cars and drivers on the road, these safety measure （安全措施）are not enough to stop the increasing car accidents. The National Highway Traffic Safety Administration （管理部门）reports that a car accident happens every 10 seconds in the United States.
Car accidents may be caused by different reasons. Some accidents are caused by driver’s tiredness and illness or drunk driving. Some may be caused by speeding or running a red light. When this happens, by the time the driver realizes what has happened, it is usually too late. As for ages, young drivers usually have enough experience while elderly drivers of react slowly. Mechanical defects （机械毛病）such as a broken brake（刹车） are another cause of car accidents. Poor road and weather conditions can also be a cause.
Talking about different causes of car accidents can help us know what precautions（预防措施） to take beforehand. We should tell our friends or family members not to drive in poor health or after drinking wine. We should tell teenager drivers to be careful with road and weather conditions and let elderly friends understand their driving limitation(局限性)。Besides, we should have our car checked regularly（规律地）. The most important thing for us to remember, however, is that we should always follow the traffic rules.
【小题1】What has the government done to try to control the increasing car accidents?

A．They try to make safer cars.	B．They try to build more roads.
C．They have passed tough traffic laws.	D．They make drivers have their car examined every month.

【小题2】What does the underlined word” elderly” possibly mean?

A．Middle-aged

B．Young

C．Rather old

D．Teenage

【小题3】Which of the following causes is different from the other three?

A．Tiredness

B．Illness

C．Drinking

D．a broken brake

【小题4】Which has nothing to do with a driver’s age?

A．Teenager drivers.	B．Not knowing the traffic rules
C．Reacting slowly	D．Driving slowly.

【小题5】In order to avoid accidents caused by mechanical defects, we should ___________.

A．not run a red light.	B．drive the car when we are in good health
C．not drive when we are too old.	D．have our cars examined regularly.

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.

根据表格内容，选择正确答案。
【小题1】 You’d better make your hands                 to get heat when you rub them.

A．slippery

B．dry

C．wet

D．smooth

【小题2】 What does the word “friction” in this text mean in Chinese?

A．摩擦

B．冷却

C．膨胀

D．震动

【小题3】                        is NOT an example of friction.

A．Bike riding

B．Car driving

C．Hands rubbing

D．Friction discovering

【小题4】 What’s the last column (栏目)?

A．THINK IT OVER!	B．WHAT HAPPENED?
C．EVERYDAY ACTION:	D．WORK WITH PARENTS!

【小题5】This text is most probably                         .

A．a science report	B．a car advertisement
C．a rubbing introduction	D．a chemistry programme

A famous teacher was speaking to the students at our school. He began his lesson by holding up a ￥100 bill. Then he said to the three hundred students， “Who would like this ￥100 bill？” The students began to put up their hands at once.
Then he said， “I am going to give this ￥100 to one of you， but first， let me do this.” He then made the bill into a ball. Then he said， “Who wants it now？” The hands went back into the air.
“Well，” he said， “What if I do this？” and he dropped it on the floor and stepped on it. He picked up the dirty， crumpled bill and said， “Who still wants it？” Hands went back into the air.
“My friends，” he said， “you have learned a valuable lesson today. No matter （无论） what I did to the money， you still wanted it because it did not go down in value （价值）。 It was still worth ￥ l00！”
Many times in our lives， we are dropped， crumpled， and stepped on by the chances we take and the things that happen to us. We feel as if we are worth nothing. But remember， no matter what has happened to you， you will never lose your value： you are always valuable to those people who love you. Your value doesn’t come from what you do or whom you know， but WHO YOU ARE.
You are special and valuable. Don’t ever forget it！
【小题1】Even though it was dirty， the money _______.

A．still went up in value

B．was worth nothing

C．didn‘t go down in value

D．was still ours

【小题2】We are always valuable to the people _______.

A．who pay us	B．who call us
C．who hate us	D．who love us

【小题3】Your value doesn‘t come from what you do but _______.

A．who you know	B．who made you
C．who you remember	D．who you are

【小题4】The sentence “Hands went back into the air” means “_______”。

A．the students put up their hands again

B．the students put down their hands

C．the students put their hands behind their backs again

D．the students put their hands in front of them

【小题5】Why did the famous teacher use a ￥100 bill at his lesson？

A．Because he wanted to make the bill into a ball.

B．Because he used to drop a bill on the floor and stepped on it.

C．Because he was going to give the bill to one of his students.

D．Because he wanted to make the students know what value was.

 —It smells terrible. What has happened here?

—Look, there is a chemical factory ____waste water___ the river.

A. pour; into                     B. pouring; into                   C. poured; to