-Why was professor Liu thundering in    the classroom yesterday?    

-A student's interrupting his speech ____  the burst of hisanger.      [ ]

A. set up  

B. set out    

C. set about                        

D. set off

在“有性急者遭迟病，更医而致杂投”中，“杂投”的意义是（）

A.乱放

B.乱扔

C.混杂

D.一起用药

E.胡乱用药