产于四川的道地药材是（）
A.川芎
B.薄荷
C.细辛
D.阿胶
E.生地黄
参考答案：A
—What are you doing right now?
—The same ________ you. Doing homework.[ ]
A. of
B. like
C. to
D. as
下列反射现象中属于条件反射的是[ ]
A．手被针刺立即缩回
B． 膝跳反射
C．一朝被蛇咬，十年怕井绳
D．排尿反射
