一盒牙膏4.70元，比一个牙刷贵l.2元。买一盒牙膏和一个牙刷共需要（ ）元。
8.2
He wasn't _______ with the knife, he cut himself. [ ]
A. careful enough
B. enough careful
C. carefully enough
D. enough carefully
给水排水施工图中轴测图即（）。
A.平面图
B.系统图
C.详图
D.标准图
