用甲醇或乙醇提取药材中的生物碱,可提取出()
A.游离生物碱
B.生物碱无机酸盐
C.生物碱有机酸盐
D.季铵型生物碱
E.两性生物碱
参考答案:A, B, C, D, E
女,45岁,出现发热、尿频、尿急、尿痛症状,最可能的诊断为()
A.急性膀胱炎
B.膀胱结核
C.糖尿病
D.神经源性膀胱
E.膀胱癌
—What do you think of your math teacher?
—He looks serious, but he can make his classes ________. [ ]
A. boring
B. quiet
C. tiring
D. lively