—What are you going to do this summer vacation?

—I’m going to start a club to help students _____not interested in schoolwork.

A．who is

B．that is

C．who are

D．which are

下列属于构成经济周期波动的监测、分析和预测指标体系的指标是( )。

A．一致指标

B．先行指标

C．滞后指标

D．销售指标

E．盈利指标