What is the writer mainly talking about in the passage? A. Water-making factories in different c——青夏教育精英家教网—

摘要： 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.

网址：http://m.1010jiajiao.com/timu3_id_2905448[举报]

阅读理解

　　①Many 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 isn't hot enough, or it doesn't shine every day. In these places, other ways of heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling 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. The fresh part of salt water freezes first. To get fresh water, the pieces of ice are taken out.

　　Which way is the 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.

　　②That is why people in many dry places talk about symi!

(1)

把短文中①句改为被动语态：_____________

(2)

把短文②句译成汉语：_________________

(3)

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

[　　]

(4)

The writer is mainly talking about water making factories in different countries.(判断正误)

(5)

What is the meaning of“freezing?”

查看习题详情和答案>>

阅读短文，选择正确答案。

    The world is not only hungry, it will also be thirsty for water. About 97% of water on the earth is sea water,
or salt water. Man can only drink or use the other 3％of the fresh water (淡水) which comes from rivers,
lakes and underground. On the other hand, because the number of people in the world is becoming larger and
larger, more and more fresh water is needed. So water shortage becomes a big problem.
    How can we work out this problem? Scientists have found some ways to turn salt water into fresh water.
One important way is to boil (使达到沸点) sea water with high heat until vapor (蒸汽) rises, leaving the salt. In
this way, a lot of fresh water can be made quickly.
    But heating is not the only way to get fresh water. Other ways are tried, for example, digging (挖) deep wells
(深井), keeping rain water and preventing rivers from being polluted.
    Which way is the best? To get the most fresh water for the least money is the best.

1. Where does the fresh water people need come from?

[ ]

A. Sea water.
B. Rivers and lakes.
C. Underground.
D. Both B and C.

2. From this passage we know fresh water ________.

[ ]

A. only comes from the rain
B. can be used in many ways
C. can be found in many factories
D. is needed by more and more people

3. The word "shortage" in this passage means ________.

[ ]

A. being enough
B. being short of
C. being short for
D. being less

4. What is the writer mainly talking about in this passage?

[ ]

A. The ways of getting fresh water.
B. How to use fresh water in our daily life.
C. All people in the world should save water.
D. Different ways of making water in different places.

5. Which of the following is true?

[ ]

A. Hunger is the only problem in our world.
B. Water shortage is the only problem in our world.
C. Scientists don't want to spend money solving the water problem.
D. Scientists have been working hard and have made much progress in solving water problem.

查看习题详情和答案>>

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 is not hot enough．Or it does not shine every day．

　　In such 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 bits of ice are taken out．

　　Which way is the 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 is why people in many dry places talk about Symi!

根据短文内容，选择最佳答案。

(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

(2)

What is the writer mainly talking about in the passage?________
[　　]
A．	Hot places and dry places．
B．	The ways of making fresh water from sea water．
C．	How to make good use of the sun．
D．	Water-making factories in different countries．

(3)

The Symi factory ________．
[　　]
A．	is a fresh water-making factory
B．	can be built everywhere
C．	can make much fresh water at a time
D．	does not need sunshine every day

(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．

(5)

Which of the following is wrong?________
[　　]
A．	New ways are tried to get fresh water．
B．	A lot of water can be made quickly by heating．
C．	The best way is to get more fresh water with the least money．
D．	The Symi’s way does not work in dry places．

查看习题详情和答案>>

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 is not hot enough．Or it does not shine every day．

　　In such places, other ways of heating sea water can be used．These ways cost more money, but they work faster than the sun．By boiling 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．The fresh part of salt water freezes first．To get fresh water, the bits of ice are taken out．

　　Which way is the 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 is why people in many dry places talk about Symi!

(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

(2)

What is the writer mainly talking about in the passage?________
[　　]
A．	Hot places and dry places．
B．	The ways of making fresh water from sea water．
C．	How to make good use of the sun．
D．	Water-making factories in different countries．

(3)

The Symi factory ________．
[　　]
A．	is a fresh water-making factory
B．	can be built everywhere
C．	can make much fresh water at a time
D．	does not need sunshine every day

(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．

(5)

Which of the following is wrong?________
[　　]
A．	New ways are tried to get fresh water．
B．	A lot of water can be made quickly by heating．
C．	The best way is to get more fresh water with the least money．
D．	The Symi's way does not work in dry places．