苦参免疫抑制作用较强的成分是（）
A.苦参碱
B.槐胺碱
C.氧化苦参碱
D.槐定碱
E.槐果碱
参考答案：A
—I hear that Sang Lan can _____ walk _____ run till now.
—But she is trying to do everything she can. [ ]
A. either; or
B. neither; nor
C. not only; but also
D. both; and
洋地黄类药物最适用的情况是（）
A.扩张型心肌病发生快速室率心房颤动伴肺瘀血
B.肥厚梗阻型心肌病
C.二尖瓣狭窄伴肺瘀血
D.心包积液伴呼吸困难
E.主动脉瓣狭窄伴肺瘀血
