单纯乳突切开术，乳突尖与耳垂连线中点皮下注射麻药2ml是为了阻

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问题单项选择题

单纯乳突切开术，乳突尖与耳垂连线中点皮下注射麻药2ml是为了阻滞（）

A.耳颞神经外耳道支

B.迷走神经耳支

C.耳大神经

D.枕小神经

E.面神经

答案

参考答案：C

问答题简答题

国家海洋局于何时正式印发并实施了《风暴潮、海啸、海冰灾害应急预案》和《赤潮灾害应急预案》？

单项选择题

I bought a new sweater in a newly-open clothes-market. But what a pity it was that the sweater ______when I washed it.

A． shrank
B． contracted
C． shortened
D． condensed