— _____ that China has the largest number of mobile phone users.

— I believe so. It seems everyone has one. [ ]

A. Someone said

B. They told me

C. It is said

D. I was told

锅包衣法又称之为

A．流化包衣法

B．滚转包衣法

C．埋管包衣法

D．压制包衣法

E．转动包衣法