局部麻醉作用起效快、作用强维持时间长且安全范围大的药物是
A.普鲁卡因
B.利多卡因
C.丁卡因
D.布比卡因
E.依替卡因
参考答案:B
我国人口稠密地区与稀疏地区的大致界线是( )
A.黑龙江省的黑河市-云南省的腾冲县一线
B.秦岭-淮河一线
C.太行山-巫山-雪峰山一线
D.南岭一线
I don’t remember how many years ago ____ I last showed you around the old campus.
A.it was that
B.was it that
C.it was which
D.was it when