前庭大腺脓肿造口术随防时间（）
A.每周1次
B.每2天1次
C.每3天1次
D.每4天1次
E.每半月一次
参考答案：A
When he arrived at the airport, Lee Minho found that fans were waiting for him there.
A．hundred
B．hundreds
C．hundred of
D．hundreds of
氢氧化钠的俗称为
A．大理石
B．熟石灰
C．纯碱
D．火碱
