下列属于水粉色技法特点的是（）。
A、色彩明快鲜艳
B、色彩层次细腻
C、色彩饱和后不透明
D、结构表现清晰
参考答案：C
You must do your homework now; you ________ computer games all the evening.
You must do your homework now; you
computer games all the evening.
A．have been playing
B．are playing
C．play
D．played
下列细菌中引起菌痢症状最严重的是（）
A.痢疾志贺菌
B.福氏志贺菌
C.鲍特志贺菌
D.宋内志贺菌
E.以上都不对
