在出口商完成出口装运，并向银行交付装运单据后，贷款银行即将出口打包贷款改为（）

A、预付款

B、卖方信贷

C、出口押汇

D、票据贴现

M: Can you recommend something that a school boy of 7 or 8 will really like
W: I’d suggest this toy train, sir. It’s an excellent brand. Very popular all over the world these days.
Q: What is the man doing().

A. Shopping with his son.

B. Buying a gift for a child.

C. Promoting a new product.

D. Bargaining with a salesgirl.