The main idea of the passage is about. The word "it" in line 2 refers to.

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问题 The main idea of the passage is about______.
The word "it" in line 2 refers to______.

选项 A、an iceberg that is towed
B、obtaining fresh water from icebergs
C、the population of arid areas
D、real life

答案B

解析

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公共英语五级笔试

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