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閱讀理解：

The world is not only hungry;it is also thirsty for water.This may seem strange to you,since nearly 75% of the earth's surface is covered with water.But about 97% of this huge amount is sea-water,or salt water.Man can only drink and use the other 3%——the fresh water that comes from rivers,lakes,underground,and other sources.And we cannot even use all of that,because some of it is in the form of icebergs（冰山）and glaciers（冰川）Even worse,some of it has been polluted.

The phrase"the world"in the first line of the passage refers to_____.

A."man"

B."you"

C."woman"

D."they"

正確答案：A

答案解析：第一句的深層意思是"人類不僅面臨糧食危機,也面臨水資源危機",因此"the world"代指"man"。我們也可以從本段第四句判斷出來,它的主語是"man"。

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