题目内容

熊彼特创业机会的来源有（）

A. 新知识、新技术的产生
B. 人口结构，观念改变
C. 产业和市场结构的变化，流程的需要
D. 意外之事，不一致之处

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是指由现实中存在的未被解决的问题所产生的创业机会。

A. 问题型机会
B. 趋势型机会
C. 组合型机会

After the speech ________, a lively discussion started.

A. is delivered
B. was delivered
C. has been delivered
D. had been delivered

He demanded that all work ________ today.

A. had been finished
B. would be finished
C. be finished
D. to be finished

As commander-in-chief of the armed forces, I have directed that all measures ________ for our defence.

A. had been taken
B. would be taken
C. be taken
D. to be taken