麻醉作用快、短,易引起呼吸抑制的静脉麻醉药是:
A.异氟烷
B.氧化亚氮
C.硫喷妥钠
D.麻醉乙醚
E.氯胺酮
参考答案:C
2元8角=( )角 4角5分=( )分
7.80元=( )元( )角 1.50角=( )角( )分
Nothing in the world is _____ if you set your mind to do it. [ ]
A. impossible
B. wonderful
C. interesting
D. necessary