“Boys and girls, I’m very glad to_____ you some difference between American English and British English today.” the speaker said.

A．tell

B．speak

C．say

D．talk

采购中必有订单业务，不可以控制哪种业务流程？（）

A.普通业务必有订单

B.直运业务必有订单

C.受托代销业务必有订单

D.委托代销业务必有订单