属于四环三萜皂苷元结构的是()
A.螺旋甾烷
B.羊毛脂甾烷
C.达玛烷
D.羽扇豆烷
E.β-香树脂烷
参考答案:B, C
—Did Mr White tell you _______?
—Yes. He said he went there in 2003. [ ]
A. when he traveled to Tibet
B. how he goes to Wuhan
C. where he spent his holidays
D. why did he visit Kunming
槐花散含有的药物是()
A.荆芥炭
B.生地黄
C.地榆
D.陈皮
E.枳实