The phrase "the world" in the first line of the passage refers to According to the passage, sea-water can be turned into fresh

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问题 The phrase "the world" in the first line of the passage refers to
According to the passage, sea-water can be turned into fresh water by

选项 A、heating it up.
B、treating it with chemicals.
C、taking salt out of it.
D、drying it up.

答案C

解析

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职称英语理工类C级

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