The baby is hard to . [ ]
A. take care
B. look after them
C. take care of
D. feed them
答案:C
有四个学生,他们的年龄恰好一个比一个大1岁,而他们的年龄的乘积是5040,那么他们的年龄各是多少?
用于支原体、衣原体感染的药物是()
A.氟康唑
B.磺胺嘧啶
C.利巴韦林
D.拉米夫定
E.阿奇霉素