The use of the chemical may present a certain hazard to the laboratory workers.

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问题 The use of the chemical may present a certain hazard to the laboratory workers.

选项 A、protection
B、indication
C、immunity
D、danger

答案D

解析 本题考查的是对名词的认知。这句话的意思是:化学制剂的使用会对实验室工作人员造成某种危害。D.danger和hazard意思相近,危险、危害。There is a widespread danger of disease in this area.在这个地区疾病有扩散的危险。A.protection:保护、防护,Insurante is a protection against unforeseeable misfortunes.保险是对不可预见的灾难的一种保护措施。B.indication:指示、迹象,Indications of a possible earthquake have been observed.人们观察到一些可能要发生地震的迹象。C.immunity:免疫力,Scientists are studying why some individuals have natural immunity to the disease。科学家们在研究为什么一些人对这种病有先天的免疫力。
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