2. 外语
  3. Long ______ to harmful pollutants is most likely to lead to a decline in health.

Long ______ to harmful pollutants is most likely to lead to a decline in health.

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问题 Long ______ to harmful pollutants is most likely to lead to a decline in health.
选项 A、exposure
B、contact
C、use
D、touch
答案A
解析 exposure(of．．．)to．．．的意思是“(把……)暴露给……”，符合本题的题意。又如，Exposure of your body to strong sunlight may be harmful。(把你的身体暴露在很强的阳光下可能是有害的。)contact(with)的意思是“与……接触”；use(of)的意思是“使用……”；touch(on)的意思是“接触……”，可见，其他三个选项的用法与本题不符。
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