专四

单选题The scientists have made an __________ study of the viruses that cause the disease.

A．exhausted 
B．exhausting 
C．exhaustive 
D．exhaustion

参考答案：C进入在线模考
【译文】科学家对导致这种疾病的病毒进行了详尽的研究。
【解析】形近词词义辨析题。exhausted表示(he)worn out“疲惫的”；exhausting“令人疲乏不堪的”；exhaustive“无遗漏的、详尽的”，如exhaustive discussion(详细的讨论)；exhaustion是名词，意为“耗尽，疲惫，筋疲力尽，竭尽”，如nervous exhaustion(神经衰弱)。综合以上词义，可以判断正确答案为C。

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