—______. What's this in English?  

—______, I don't know.[ ]

A. Excuse me; Sorry

B. Excuse me; Excuse me

C. Sorry; Sorry

不造成肠黏膜损害的腹泻致病菌是（）

A.空肠弯曲菌

B.耶尔森菌

C.金葡菌

D.产毒性大肠杆菌

E.侵袭性大肠杆菌