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职称英语
理工类B级
[单选题]
Growing levels ofpollution represent a serious [health] hazard to the,local population.
A.protection
B.indication
C.immunity
D.danger
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![Growing levels ofpollution represent a serious [health] hazard to the,local population.](https://img.zhaotiba.com/tiku75/15024572.jpg "Growing levels ofpollution represent a serious [health] hazard to the,local population.")