临床可用于表面麻醉的药物有()
A.普鲁卡因
B.利多卡因
C.丁卡因
D.布比卡因
E.卡波卡因
参考答案:B, C
数字不仅可以表示数量和顺序,还可以表示______.
27. That’s the woman one of __________ daughters works as an engineer in the US.
A.who
B.whom
C.her
D.Whose