一国国际贸易进口大于出口的现象通常称为( )。

A．贸易顺差，又称入超

B．贸易逆差，又称出超

C．贸易顺差，又称出超

D．贸易逆差，又称入超

26. How long do you think ________ the computer company brings out a new product?

A．it will be before

B．will it be until

C．will it be when

D．it will be that