结核病预防性化疗通常选用的药物是()
A.异烟肼
B.利福平
C.链霉素
D.吡嗪酰胺
E.乙胺丁醇
参考答案:A
下列常见物质中,属于氧化物的是( )
A.NaCl
B.Al2O3
C.CH4
D.Cu(OH)2
Our football team will compete against the Japanese team this evening. Let's go and _____. [ ]
A. cheer them up
B. join them up
C. add them up
D. pick them up