—Have you heard of the good fireman, Quan Zhanrong?

—Yes, he thought of others ______ than himself.

A．less

B．fewer

C．best

D．more

在正向市场上，某投机者采用牛市套利策略，则他希望将来两份合约的价差( )。

A．扩大

B．缩小

C．不变

D．无规律