2. 外语
  3. ______ there is little we can do to modify the weather, we can at least know what kind of weather to expect.

______ there is little we can do to modify the weather, we can at least know what kind of weather to expect.

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问题 ______ there is little we can do to modify the weather, we can at least know what kind of weather to expect.
选项 A、Since
B、When
C、While
D、Unless
答案C
解析 逻辑关系题。本句的意思是：尽管我们在改变天气方面无能为力，但我们至少(at least)可以知道天气未来的变化。本句的关键点是：while除引导时间状语从句外，还可引导让步状语从句，意为“尽管，虽然”。
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