I was told that there were about 50 foreign students ________ Chinese in the school, most ________ were from Germany.

A．study; of whom

B．study; of them

C．studying; of them

D．studying; of whom

银行卡跨行业务差错调整通知书由（）负责下发。

A.省资金中心

B.市资金中心

C.省科技中心

D.市科技中心