患儿,6个月。因腹泻长期使用广谱抗生素。症见:满口白屑,状如雪花,不易擦去。应首先考虑的是()。
A.乳垢
B.口糜
C.疳积
D.奶麻
E.鹅口疮
参考答案:E
用一根长52厘米的铁丝围一个正方形框架,边长是( )。
—I'm sorry I'm late, because the traffic is bad.
—________, but tomorrow, please be on time. [ ]
A. It's pleasure.
B. It doesn't matter
C. That's right