试题与答案

鼓膜的上皮层来源于() A.外胚层 B.中胚层 C.内胚层 D.第二腮弓 E.外中胚

题型:单项选择题

题目:

鼓膜的上皮层来源于()

A.外胚层

B.中胚层

C.内胚层

D.第二腮弓

E.外中胚层

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错

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