对于经济预警来说，最具根本意义同时也比较重要的是（）
A．分析警兆
B．寻找警源
C．确定各类警限
D．定量描述警情
参考答案：C
某企业收回已转销的坏账2000元。
Which of the following theories assumes the main source of business cycle is most likely due to changes in technology and extemal shocks（）
A. Keynesian cycle theory.
B. Real business cycle theory.
C. New classical cycle theory.
