物理消毒灭菌法有（）
A.燃烧法
B.煮沸法
C.浸泡法
D.高压蒸汽灭菌法
E.电离辐射灭菌法
参考答案：A, B, D, E
----when are you going off for your holiday?
----My plane ______ at 9:20, so I must be at the airport by 8:20.
A．took off
B．has taken off
C．is taking off
D．would take off
犯罪的消长律
