Question

阅读理解

　　Many places in the world need more fresh(淡的) 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 isn't hot enough, or it doesn't shine every day. In these places, other ways of heating(加热) 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(冷冻). 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.

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

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

答案：B;A;C;B;D
解析：

1．通过阅读整篇短文，尤其是根据短文第一段所叙述的世界许多地方需要更多的淡水及句子“Every country is trying to find ways to turn salt water into fresh”，可判断出正确答案． 　　2．短文第一段叙述了每一个国家都在尽力探索把海水变成淡水的方法，再根据短文第二段中表示反问的否定的特殊疑问句“Why aren't there many factories like the Symi factory?”，就不难推断出Symi factory是一个淡水加工厂． 　　3．根据短文倒数第一段的“Symi's way seems very good for small, hot places”可知，Symi的方法是小而炎热的地方获取淡水的最好方法． 　　4．短文首段叙述了“Many places in the world need more fresh water. Every country is trying to find was to turn salt water into fresh”，以下各段分别叙述了从海水里提取淡水的不同方法，如：Symi工厂制造淡水，加热海水，冷冻海水等．从全文考虑，只有B项才能概括全文大意． 　　5．短文中叙述了从海水里提取淡水的Symi工厂似乎对小而炎热的地方比较合适．虽然用这种方法每次制造不出很多的淡水，但工厂容易建造，花费也少．再根据短文的结束句“That's why people in many dry places talk about Symi!”，就可以判断出Symi的方法在干燥的地方不能奏效的说法与事实不符．