初发疟疾停止后,血中疟原虫已完全消失,遇机体免疫力低下时,又出现疟原血症或症状者称
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—A man came to say hello to me at the party, but I think we have never met before.—He must
A. some other
B. someone else
C. other person
D. one other
维生素C为一元酸其几位羟基酸性较强
A. C4位羟基酸性较强
B. C3位羟基酸性较强
C5位羟基酸性较强
D. C,位羟基酸性较强
E. C2位羟基酸性较强