题目内容

A．seriousB．importantC．necessaryD．worried

A. serious
B. important
C. necessary
D. worried

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A．onB．inC．ofD．under

A. on
B. in
C. of
D. under

价格机制引导资源配置是通过价格的()功能来实现的。

A. 激励
B. 标价
C. 预期
D. 信号

A．mixedB．mixtureC．mixingD．mixer

A. mixed
B. mixture
C. mixing
D. mixer

A．TheyB．A lot ofC．MuchD．Many

A. They
B. A lot of
C. Much
D. Many