Question

Many places in the world need more fresh water(淡水). 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 isn't hot enough, or it doesn't shine every day. In these places other ways to heating(加熱) sea water can be used. These ways cost more money, but they work faster than the sun. By boiling(煮沸) sea 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 tried. One way is freezing(冷凍). The fresh part of salt water freezes first. To get fresh water, the pieces 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 doesn't make very much water at a time. But the factory is easy to build and cost little.

1.From the passage we know that fresh water .

A. is needed in many countries B. is needed in every country

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

2. The Symi factory .

A. is a fresh water factory

B. can be built everywhere

C. can make much fresh water at a time

D. doesn't need sunshine every day

3. 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 sunny places.

C. The Symi's way.

D. Freezing the sea water in cold places.

4. The writer is mainly talking about .

A. water making factories in different countries

B. the ways of making fresh water from sea water

C. hot places and dry places

D. how to make good use of the sunlight

5. Which of the following isn't 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 the most fresh water with the least money.

D. The Symi's way doesn't work in dry places.

 

Answer 1

1.B

2.A

3.C

4.D

5.C

【解析】

試題分析：這篇短文主要介紹了世界上許多的地方都需要更多的淡水，每個國家都在設法找把鹽水變成淡水的方法。當然人們希望花費最少的錢獲得最多的淡水。

1.根據(jù)Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh.可知淡水在每個國家都很重要.故選B.

2.根據(jù)Symi's way seems very good for small, hot places. It does not make much water at a time. But the factory is easy to build and costs little.描述,可知這種工廠能將鹽水變成淡水.故選A

3.根據(jù)The one that gives the most water for the least money. I 及下文Symi's way seems very good for small, hot places. It does not make much water at a time. But the factory is easy to build and costs little.描述,可知選C.

4.根據(jù)短文第二段描述,可知在一些炎熱的小地方獲取淡水的最好方法是冷凍海水,故選D.

5.根據(jù)Symi's way seems very good for small, hot places.描述,可知這不適合涼爽的地區(qū),故選C.

考點：科普類短文閱讀。