能清热燥湿，泻肝胆火的药物是（）
A.龙胆
B.苦参
C.黄连
D.秦皮
E.黄柏
参考答案：A
棘球蚴砂是指囊液内含有（）
A.原头蚴、生发囊、子囊和虫卵
B.石灰小体
C.只有生发囊
D.只有子囊
E.原头蚴、生发囊、子囊
Whenever we met, Lily ________ greet me first though I was younger than her.[ ]
A. must
B. would
C. should
D. could
