水火共制发包括（）。
A.煅
B.蒸
C.淬
D.煮
E.单
参考答案：B, C, D, E
A number of students _____from the south.
A．are
B．is
C．have
D．has
__________ Tom. This is ____________ book. [ ]
A. I am, my
B. I am, I
C. He is, he
D. He is, her
