治疗耐青霉素G的金黄色葡萄球菌败血症，可首选（）
A.苯唑西林
B.氨苄西林
C.羧苄西林
D.氯唑西林
E.红霉素
参考答案：A
用所给单词的适当形式填空。
1. They have dinner at six ________ (clock) in the afternoon.
2. I ________ (eat) breakfast at 8:00 in the morning.
3. We must brush our ________ (tooth) everyday.
4. Can you tell ________ (he) the name of our teacher?
5. He takes a bus ________ (go) to school.
乳剂中液滴聚集后乳化膜破裂，液滴合并，并与分散介质分离成不相混溶的两层，称为（）
A.酸败
B.破裂
C.分层
D.转相
E.絮凝
