2. When a person is badly hurt and is unconscious, he ___________________.

A . shall feel pain B. can still thinkC. doesn’t feel pain　 D. sometimes feel pain

1.(　 ) The word “unconscious” means _______________________.

　　　 A. 失去知觉　　B. 流血过多　C. 失去双腿　　D. 不会说话

5. Which of the following is not true?

A. New ways are tried to get fresh water. B. A lot of fresh water can be made quickly by heating.

C. The best way is to get some fresh water with the least money.

D. The Symi’s way does not work in dry places.

⑼Suppose (假设) a man has a car accident. He is hurt badly and is unconscious，that is, he can’t think, speak, or hear. His family takes him to the hospital. The doctors tell the family that his brain is dead. A machine can make him breathe.

Now the patient’s family must answer some difficult questions. Should they think he is dead? Should they ask the doctors to use the machine to make him breathe? Sometimes machines can make an unconscious person breathe for years. However if his brain is dead, he will never think, speak, or hear again. Then, should his family ask the doctors not to use the machine and let him die?

Someone who is unconscious can’t say he wants to die. Can his family say this for him? Some people think this is a good idea. Some think otherwise.

Many people are hurt when machines keep a person alive. The unconscious person doesn’t know it. Machines only make the family and friends hurt longer.

4. Which is the best way for small and hot places to get fresh water?

A. Boiling or heating the sea water.B. The way in hotter and drier places.

C. The Symi’s way.D. Freezing the sea water in cold places.

3. From the passage we know the Symi factory ________________.

A. seems good but too small　 B. is a fresh water-making factory

C. can make much fresh water at a time　 D. does not need sunshine every day

2. What is the writer mainly talking about in the passage?

　　　 A. Water-making factories in different countries.

B. The ways of making fresh water from sea water.

C. Hot and dry places.

D. How to make use of the sun.

1. From the passage we know that fresh water___________________.

A. is needed in every country　　　 B. can be found in many factories

C. can be used in many ways　　　 D. is very important for factories

5. Motor homes have become popular because___________.

A. they can take people to another city when people are free

B. they can let families have a happier life when they go out for their holidays

C. some people think motor homes are cheap

D. big families can put more things in motor homes

　 ⑻ Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh.

　 Why aren’t there many factories like the Symi factory?

　 In some places, the sun is not hot enough. Or it does not shine every day.

In such places, other way of heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling　 see water with high heat, a lot of fresh water can be made quickly.But heating is not the only way to get fresh water from salt water. Other ways are tired.

One way is freezing (冷冻). The fresh part of salt water freezes first. To get fresh water, the bits of ice are taken out.

Which way is best? The one that gives the most water for the least money. It may be a different way for each place.

Symi’s way seems very good for small, hot places. It does not make very much water at a time. But the factory is easy to build and costs little.

That’s why people in many dry places talk about Symi!

4. Americans usually use motor homer____________.

A. to travel with all the family members of holiday

B. to do some shopping with all the family members

C. to visit their grandparents at weekends D. to drive their children to school every day

3. A motor home is usually owned by a family with__________.

　 A. a baby B. much money　 C. more than two children　 D. interest in vans