问题
单项选择题
胃壁组织由外而内可分为四层，则外面第二层应为（）。
A.肌层
B.粘膜下层
C.浆膜层
D.粘膜层
答案
参考答案：A
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胃壁组织由外而内可分为四层，则外面第二层应为（）。
A.肌层
B.粘膜下层
C.浆膜层
D.粘膜层
参考答案：A
| 用方框中动词的适当形式填空 | |
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