头皮裂伤，现场急救首选措施哪项是错误的（）
A.抗休克
B.止痛
C.安慰
D.压迫止血包扎
E.后送
参考答案：A, B, C, E
— What do you think of the bottled water?
— I don’t like it at all. It is reported that much nutrition, including some minerals, ______ while it is being processed.
A．are ridded of
B．are gotten rid of
C．gets rid of
D．is ridded of
低速气流流经扩张管道时，（）。
A.速度增加、压力增加
B.速度减小、压力减小
C.速度减小、压力增加
D.速度增加、压力减小
