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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