下列哪些抗结核药属于杀菌剂（）
A、异烟肼
B、利福平
C、链霉素
D、吡嗪酰胺
参考答案：A, B, C, D
----In recent years, _____problem of global warming has become very serious.
----That’s right. People are facing _____diversity of natural disasters now.
A．/, a
B．a, the
C．the, a
D．a, a
群众歌曲
