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问题 单项选择题

患者准备措施与扫描部位的组合，错误的是

A．颅脑CT—头颅固定

B．眼部CT—闭眼

C．腹部CT—屏气

D．喉部CT—深度呼吸

E．副鼻窦CT—不作吞咽动作

答案

参考答案：D

选择题

—Amy, please tell the people seated and ________ for their turns to come to my office five minutes later.

—Yes, sir.

A．wait

B．waiting

C．waited

D．to wait
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选择题

The professor’s research finally proved to be ______, though he had spent a lot of money on it.

A．priceless

B．valuable

C．worthless

D．worthwhile
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