They _______ some books from the liarary last week.
A.lend
B.lends
C.buy
D.borrowed
答案:D
-1,6,25,62,( )
A.87
B.105
C.123
D.132
临床上最常用的除极化型肌松药是:
A.加拉碘胺
B.泮库溴铵
C.琥珀胆碱
D.筒箭毒碱
E.六甲双铵