题目内容

He said ... He was very nervous.

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I am glad. You can join us.

I am sorry. I shouted at you.

We are talking about ... When should we start?

下列（）是成对的喉软骨。

A. 甲状软骨
B. 环状软骨
C. 杓状软骨
D. 会厌软骨