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Growing levels of pollution represent a serious health hazard to the local population.
A:protection
B:indication
C:immunity
D:danger
B:indication
C:immunity
D:danger
参考答案
参考解析
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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B:indication
C:immunity
D:danger
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