___________in the regulations that one should not tell other people the password of your email account.  [ ]

A. What is recommended            

B. What recommend    

C. It is recommended                

D. It recommend

阑尾炎的正确取材是（）

A.病变处取材2块

B.在盲端和病变处分别取材1块

C.在盲端和切缘分别取材1块

D.阑尾中间、距切缘0.5cm处和盲端各取1块

E.病变处取材2块、盲端取材1块