2. 考研
  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.

admin2005-07-06  77
问题 Long ______ to harmful pollutants is most likely to lead to a decline in health.
选项 A、contact
B、touch
C、use
D、exposure
答案D
解析 这里的意思是“长期接触有害污染物……”，exposure to表示了这一概念。
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