常用的诊断方法有____、____、____。
参考答案：直接诊断,排除诊断,鉴别诊断
The students in the higher grades I met in a football game are my good friends now.
A. when B. which C. who
治疗寒积便秘，应选用的药物是（）。
A.甘遂
B.大黄
C.芒硝
D.巴豆
E.牵牛子
