单项选择题
M: Isn’t the Changjiang River twenty-five thousand kilometres long W: Oh, no, it’s not as long as that. It’s about a quarter the length you said.
A．About 6000 km. B．About 5000 km. C．About 4000 km.
A．At his office. B．At lunch. C．At the travel agency.
A.except that B.except but C.besides D.except for