请找出适合贴在存放初中化学教学中常用的浓酸、浓碱药品柜上的图标（ ）
A．
B．
C．
D．
答案：C
- Look! It’s raining again.
-- Why _________it rain on Sundays? We are always staying inside! What a nuisance!.
A．need
B．can
C．must
D．should
船长紧急处分职能
