—  ______ made Daisy wild with joy?

— Her success in the A-level exam this year. [ ]

A. How was it that  

B. When was it that

C. Why was it that    

D. What was it that

易导致感染性休克的病原体为（）

A.脑膜炎奈瑟菌

B.铜绿假单胞菌

C.白假丝酵母菌

D.沙门菌属

E.志贺菌属