下列疾病中以风团为主要损害的是（）。
A.扁平疣
B.扁平苔藓
C.黄色瘤
D.湿疹
E.荨麻疹
参考答案：E
以下为主动靶向制剂的是（）
A.微型胶囊制剂
B.脂质体制剂
C.环糊精包合制剂
D.固体分散体制剂
E.前体靶向药物
All flights ___ because of the storm, they had to wait in the hall. [ ]
A. have put off
B. were put off
C. have been put off
D. having been put off
