通过抑制细菌的二氢叶酸合成酶而起到抑菌作用的药物是（）
A.硫酸链霉素
B.利福平
C.乙胺丁醇
D.磺胺嘧啶
E.异烟肼
参考答案：D
只有长大了才有人格尊严，未成年人没有人格尊严。 [ ]
W: Professor Clark suggested I get a tutor for advanced physics. M: Well, that might help. Advanced physics is a pretty difficult course. Q: What does the man mean().
A. Female students are unfit for studying physics.
B. He can serve as the woman’s tutor.
C. Physics is an important course at school.
D. The professor’s suggestion is constructive.
