填空题

Paragraph 3 ______.

【参考答案】

C
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填空题
Paragraph 2 ______.
单项选择题
According to the passage, we can avoid a worldwide water shortage in the future by
A．increasing rainfall.
B．reusing water and utilizing sea-water.
C．cutting down our consumption of water.
D．reducing the number of factories producing steel.
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