He wants ______shopping.[ ]
A. to do some
B. do some
C. do some to
D. to do something
答案:A
乳状液型注射剂可选用的乳化剂为()
A.司盘-80
B.月桂醇硫酸钠
C.新洁尔灭
D.卵磷脂
E.十二烷基苯磺酸钠
增生性龈炎多见于
A.儿童B.青少年C.成年D.幼儿E.老年