题目内容

信息不对称会增加市场的交易成本。()

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It is reported _____ great changes have been made with the application of the new policy.

A. which
B. that
C. while
D. what

The manager promised to keep me _____ of how the project was going on.

A. be informed
B. Informed
C. inform
D. informing

因为科学教育文化卫生等具有私人性，所以政府不应为此出资。()

导致市场运转失灵的基本原因在于价格信号总是能充分地反映社会边际效益和社会边际成本。()