He ______ his coat and then went out. [ ]
A. is wearing
B. wore
C. put on
D. puts on
答案:C
具有止呕功效的药物是()
A.苍术
B.砂仁
C.豆蔻
D.藿香
E.草豆蔻
细胞水肿时,主要发生病变的细胞器是
A.线粒体和内质网B.高尔基复合体和线粒体C.核糖体和内质网D.内质网和中心体