红参的产地加工方法为
A．去须根、晒干
B．去须根、烘干
C．去须根、蒸后晒干和烘干
D．不去须根、晒干
E．不去须根、晒干和烘干
参考答案：C
I want to to skate. Can you me?[ ]
A. learn, teach
B. teach, learn
C. learn, teacher
The professor ________at 8 o’clock，but he has not shown up yet，which worries all of us.
A．was supposed to arrive
B．must have arrived
C．might have arrived
D．was supposed arriving
