蛔虫钻孔习性引发的临床表现中,最常见的是()
A.胰管蛔虫症
B.蛔虫性脑病
C.蛔虫性腹膜炎
D.阑尾蛔虫症
E.胆道蛔虫病
参考答案:E
You’ll have an exam soon. I think you should spend ______ time on your homework.
A.less
B.more
C.fewer
D.shorter
防止H2S中毒是生产中防中毒的重点工作。