为保证病人有适当的活动空间，病床之间的距离不得少于（）
A.0.6m
B.0.7m
C.0.8m
D.0.9m
E.1m
参考答案：E
Have you ever heard the theme song of the 29th Olympic Games, Hand in Hand, _____ in Chinese? [ ]
A. sing
B. to sing
C. singing
D. sung
不宜与芒硝同用的是( )
A．牵牛子B．郁金C．三棱D．赤石脂E．狼毒
