I ____________ to buy a gift for my mother. [ ]
A. played
B. wants
C. wanted
答案:C
对肾脏毒性较大的抗结核药是()
A.乙胺丁醇
B.利福平
C.吡嗪酰胺
D.链霉素
E.异烟肼
简述劳动法律责任的要素。