听力原文：From an early date bankers have made a charge for the services which they provide for their customers.(9)A．From an early date the banker have charged a commission for their services.B．From an early date the banker has an obligation to serve the custo
题目
听力原文：From an early date bankers have made a charge for the services which they provide for their customers.
(9)
A．From an early date the banker have charged a commission for their services.
B．From an early date the banker has an obligation to serve the customers.
C．From an early date the customers have charged a commission.
D．From an early date the customer has an obligation to serve the banker.