胃大部分切除的患者出现严重贫血,表现为外周血红细胞呈大细胞性,其主要原因是下列哪项减小()
A.稀盐酸
B.内因子
C.粘液
D.HCO5
E.胃蛋白酶原
参考答案:B
Tom insisted _____ history instead of business at university, but his mother insisted that he _____ her advice. [ ]
A. on studying, take
B. to study, must take
C. on studying, took
D. in studying, should take
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