Nowadays people are wasting too much energy, so we should lead a low-carbon life., we’ll s

Nowadays people are wasting too much energy, so we should lead a low-carbon life.
, we’ll suffer a lot in the future.
A. When possible
B. If any
C. If not
D. Where necessary

A. When possibleB. If any (答案→)C. If notD. Where necessary解析：考查省略句。句意：现在人们正在浪费太多的能源，因此我们应该过一种低碳生活。如果不这样的话，在将来会遭受痛苦。If not 如果不这样的话，在这里完整形式为If we should not lead a low-carbon life，所以选C 。

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