可用于治疗白驳风的外用药是（）
A.颠倒散
B.30%补骨脂酊
C.玉容散粉末
D.炉甘石洗剂
E.鲜生姜
参考答案：B
E-mail, as well as telephones, ______ an important part in our daily life. [ ]
A. is playing
B. play
C. are playing
D. have played
信托公司信托产品可以设计为开放式。
