公路养护工在采场行走距掌子边缘最小为（）m。
A.0.5
B.0.8
C.1.2
D.1.5
参考答案：D
关于咳嗽的药物治疗
剧咳宜首选的非处方药是
A．右美沙芬 B．可待因C．苯丙哌林 D．喷托维林E．羧甲司坦
It _ __ last night，for the ground was wet this morning.
A．must have rained
B．may have rained
C．must rain
D．might rain
