常用的消毒剂有()
A．酒精
B．碘酒
C．石炭酸
D．环氧乙烷
E．甲醛
参考答案：A,B,C,D,E
可收缩结膜表层血管（）。
A.丁卡因
B.色甘酸钠
C.双氯芬酸钠
D.氧氟沙星
E.去氧肾上腺素
--Who is your new secretary?
--Miss Evens. I’m very pleased with the work that she _________ so far.
A．are doing
B．did
C．were doing
D．has done
