木楼梯踏板步若为拼板制作，则______为较好的一种方式。
A．直拼
B．高低缝
C．企口缝
D．销接法
参考答案：C
The man is ________ a serious nervous breakdown because he is unable to deal with pressure from daily life.
A．in front of
B．in favor of
C．on behalf of
D．on the edge of
下列哪些辅助检查适合昏迷患者（）.
A.血电解质
B.头CT
C.血常规
D.胸穿
E.尿液毒物筛检
