企业面临的风险主要是( )两类。

A．市场风险和经营风险
B．市场风险和信用风险
C．经营风险和流动性风险
D．行业风险和经营风险

—You seemed not to be interested in the story yesterday.

—Yes. I      it in a magazine before.

A．read

B．was reading

C．have read

D．had read