题目内容

________ you wait a few more minutes? It'll be your turn soon.

A. Must
B. Should
Could
D. Might

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更多问题

He ________ be tired, because he began to work just ten minutes ago.

A. needn’t
B. mustn’t
C. may not
D. can’t

Mike ______ be in Beijing because I saw him in the classroom only a few minutes ago.

A. mustn’t
B. can’t
C. may not
D. might not

- This kind of bananas is .- Yes, it tastes very _.

A. good; nice
B. well; nice
C. good; nicely
D. well; nicely

病原体进入人体后,仅引起机体发生特异性免疫应答,病理变化轻微,临床上不显出任何症状和体征,只有通过免疫学检查才能发现者,称为( )

A. 隐性感染
B. 轻型病例
C. 病原携带状态
D. 恢复期病人
E. 潜伏性感染