芳酸类药物是指
A．分子中有羧基的药物
B．分子中有苯环的药物
C．A+B
D．具有酸性的药物
E．A+B且A与B直接相连的药物
参考答案：E
For many cities in the world, there is no room to spread out further, _____ New York is an example. [ ]
A. for which
B. in which
C. of which
D. from which
柏油样便可见于（）
A.溃疡性结肠炎
B.痔疮
C.肠结核
D.十二指肠溃疡
E.阿米巴痢疾
