2. 外语
  3. Humans should not develop their economy at the_____of the ecological environment.

Humans should not develop their economy at the_____of the ecological environment.

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问题 Humans should not develop their economy at the_____of the ecological environment.
选项 A、destruction
B、pollution
C、expense
D、mercy
答案C
解析 各项的意思是：destruction“破坏，毁灭”；pollution“染，玷污”；expense“代价，损失，开支”；at the expense of“在损害……情况下，以……为代价”；mercy“仁慈，宽恕，怜悯”；at the mercy of“受……的支配”。空格处的意思是：在损害生态环境的情况下。
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