专四

单选题回答第49空。

A.continue 
B.linger
C.delay 
D.persist

参考答案:B进入在线模考
【解析】表示“病毒的持续或逗留”要用linger,故选B。
【点睛】词汇辨析题。根据句意,此处指病毒死亡之前会存活一段时间,强调其顽固性和持续性。而A项“继续”,C项“延缓”,均不能准确表达句意。选项D“坚持”指不畏困难继续做某事,故不选。

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