— The education system rather than the teachers      to answer for the heavy burden on the students.

— I agree. I hope the reform being carried out in our country at present will bring about the

       results.

A．are; desired

B．is; desired

C．are; desiring

D．is; desiring

资本的投入数量受多种因素制约，其中最重要的是( )。

A．消费能力利用率
B．资本的利用率或生产能力利用率
C．投资能力利用事
D．生产资料利用率