问题 单项选择题

关于cornea,哪项错误().

A.可分为5层

B.神经末梢丰富,但血管较少

C.角膜基质层最厚

D.上皮基底层细胞由角膜缘干细胞补充

答案

参考答案:B

写作题

根据提示和要求,以My friend为题写一篇英语短文,简单介绍一下你的朋友,语句通顺,意思连贯,可适当地扩充内容,字数80个单词左右。

提示:

name:Tom              age:14 years old

have: short hair        from: from USA

like: watching TV , reading books , listening to music

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单项选择题