下列抗结核药中耐药性产生较缓慢的药是()
A.异烟肼
B.对氨水杨酸
C.利福平
D.吡嗪酰胺
E.链霉素
参考答案:B
Which do you enjoy____________ your weekends, fishing or watching TV?
A.spending
B.spend
C.being spent
D.to spend
PHS(小灵通)