The world is not hungry，but it’s thirsty.   1  while we say we are short of water.Why？Because about 97% of water on the earth is sea water which we can‘t drink or use for watering plants directly.Man can only drink and use the 3% of water that comes from rivers and lakes.   2  ，because some of it has been polluted.
　　Now more water is needed.The problem is how we can avoid a serious water shortage in the future.  3 Scientists are making study in this field.Today，In most large cities water is used only once and then runs to the sea or rivers.but it can be used again.Even if every large city reused its water，the water will still not be enough. 4 .
　　The sea seems to give us the best answer.There is a lot of water in the sea.All that needs to be get the salt out of the sea water.This will be expensive，but it has already been used in many parts of the world.   6 So you see，if we can find out a way，we’ll be in no danger of drying up.
从方框中所给的选项中选出能填入空白处的最佳选项，补全短文。其中有一项为多余选项。

The world is not hungry，but it’s thirsty.   1  while we say we are short of water.Why？Because about 97% of water on the earth is sea water which we can‘t drink or use for watering plants directly.Man can only drink and use the 3% of water that comes from rivers and lakes.   2  ，because some of it has been polluted.

　　Now more water is needed.The problem is how we can avoid a serious water shortage in the future.  3 Scientists are making study in this field.Today，In most large cities water is used only once and then runs to the sea or rivers.but it can be used again.Even if every large city reused its water，the water will still not be enough. 4 .

　　The sea seems to give us the best answer.There is a lot of water in the sea.All that needs to be get the salt out of the sea water.This will be expensive，but it has already been used in many parts of the world.   6 So you see，if we can find out a way，we’ll be in no danger of drying up.

从方框中所给的选项中选出能填入空白处的最佳选项，补全短文。其中有一项为多余选项。

E. First, we should find out ways to reuse it.

F. And we can’t even use all of that.

　　Water is “life” of our earth. It's in every living thing. It is in the air. It runs through mountains and valleys. It forms（形成）lakes and oceans. Water is everywhere.

　　Nature has a great water system（系统）. Rain water finds its way to streams（溪）and rivers. Rivers lead to the ocean. At mouths of rivers, fresh water joins the salt water of the ocean.

　　Thick water steam（水蒸气）in the air becomes clouds and clouds bring us rain. Plants and animals' lives depend on water. Where there is water, there is life. We have to clean our streams and rivers and do something against pollution（污染）because pollution does harm（有害的）to the life.

(1) We say water is “life” of our earth because ____.

A．water is in the air

B．water can run everywhere

C．there is water in every living thing

D．where there is water, there is life

(2) According to（根据）the article, which of the following is correct?

A．Water is in every living thing.

B．Water is everything.

C．Water forms everything.

D．Water runs through everything.

A．Clean the stream.

B．Stop air pollution.

C．Prevent（阻止）the fresh water from joining the salt water.

D．Clean our streams and rivers.