Question

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

Answer 1

C

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 。