经皮给药制剂的基本组成为（）
A.背衬层
B.药物储库
C.控释膜
D.黏附层
E.保护膜
参考答案：A, B, C, D, E
Jenny is a quick thinker, and she always works out the cost ______ more quickly than me. [ ]
A. some
B. many
C. little
D. much
幼年时期，生长激素分泌过多将引起 [ ]
A．肢端肥大症
B．巨人症
C．呆小症
D．侏儒症
