可呼吸性粉尘的粒子直径是（）
A.小于15μm
B.小于10μm
C.小于5μm
D.小于3μm
E.小于1μm
参考答案：C
— It seems that Alice never wants to do anything except draw pictures.
— Right. That's what she likes to do _____. [ ]
A. more
B. less
C. most
D. least
男性，4岁，发热2天，咳嗽流涕，目赤喷嚏，精神倦怠，胃纳欠佳。从昨夜开始自头面起逐渐向躯干发出淡红色斑丘疹，分布均匀，稀疏细小，苔薄黄，脉浮数。本病的诊断是（）
A.麻疹
B.风痧
C.奶麻
D.丹痧
E.水痘
