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  3. Growing levels of pollution represent a serious health hazard to the local po...

Growing levels of pollution represent a serious health hazard to the local po...

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问题 Growing levels of pollution represent a serious health hazard to the local population.
选项 A:protection
B:indication
C:immunity
D:danger
答案D
解析本句意思：日益严重的污染对当地人民的健康构成了重大威胁。hazard意为“危险，隐患”，与danger（危险）意思相近。protection保护，防护；indication标示，迹象；immunity免疫力。
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