At the age of 29, Dave was a worker, in

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问题选择题

At the age of 29, Dave was a worker, in a small apartment near Boston and ______ what to do about his future.

A．living; wondering

B．lived; wondering

C．lived; wondered

D．living; wondered

答案

答案：A

单项选择题

视图设计器中含有的、但查询设计器中却没有的选项卡是（）

A. 筛选

B. 排序依据

C.分组依据

D.更新条件

单项选择题

The short-run supply curve for a purely competitive market:（）

A. slopes upward to the right.

B. slopes downward to the right.

C. is a horizontal line.