采用升华制霜的是（）
A.巴豆霜
B.西瓜霜
C.砒霜
D.鹿角霜
E.千金子霜
参考答案：C
在项目运营阶段的主要风险可能是（）等。
A.建设风险
B.市场风险
C.政策风险
D.管理风险
E.融资风险
You must remember _________ .
A．what your teacher said
B．what did your teacher say
C．your teacher said what
D．what has your teacher said
