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问题
单项选择题
血清碱性磷酸酶大部分由何种组织细胞产生( )
A.肝
B.肾
C.小肠
D.骨
E.乳腺
答案
参考答案:D
选择题
It's getting late. Tina has to go home now, _____?
A. isn't she
B. doesn't she
C. haven't she
D. wasn't she
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单项选择题
毛 * * 认为,社会生活是文艺的()
A.主要源泉
B.根本源泉
C.唯一源泉
D.重要源泉
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