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问题 单项选择题 A1/A2型题

上齿槽后神经阻滞麻醉后即出现患侧面部肿胀的可能原因是（）

A.感染

B.腮腺导管阻塞

C.局麻药过敏

D.翼静脉丛损伤

E.局麻药注射过量

答案

参考答案：D

选择题

You can’t imagine ____ when they received these nice Christmas presents.

A．how they were excited

B．how excited they were

C．how excited were they

D．they were how excited
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选择题

The old scientist devoted all her time she had _____ the western parts of China.[ ]

A. to develop

B. developing

C. to developing

D. developed

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