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Don’t you realize the ________these chemicals are doing to our environment?
A.shelterB.trackC.damageD.ouline
C

试题分析:考查固定搭配和名词辨析。do damage to sb/sth对......造成伤害。句意:你难道没有意识到这些化学物质正在对我们的环境造成伤害吗?A居所;B踪迹,轨道;C伤害;D轮廓,提纲。故选C。
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