At present, the government must be very      about setting policies for the economical crisis and make

no decision until they are quite sure it is the right one.  [ ]

A. particular  

B. concerned  

C. cautious    

D. alternative

将待灭菌物置沸水中加热灭菌的方法（）

A.干热灭菌法

B.煮沸灭菌法

C.流通蒸汽灭菌法

D.微波灭菌法

E.紫外线灭菌法