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问题 单项选择题

在普查和诊断肺癌时，下列检查占重要地位的是（）

A.肺功能检查

B.胸部X线摄片检查

C.痰细胞学检查

D.纤维支气管镜检查

E.胸腔积液检查

答案

参考答案：C

解析：痰细胞检查简单易行。

问答题 简答题

路肩宽度标准是多少？
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选择题

It was _____ computer games that cost the boy a lot of time that he ought to have spent on his lessons.

A．to have played

B．playing

C．played

D．having played
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