鸡内金的功效（）
A.降气化痰
B.运脾消食
C.活血化瘀
D.化坚消石
E.固精止遗
参考答案：B, D, E
---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?
---- Really? No _____ I haven’t seen him for a long time.
A．have; doubt
B．has; wonder
C．have; wonder
D．has; choice
教师的根本任务是（）。
