He is John Brown. John is his _____ name_爱下问搜题

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问题选择题

He is John Brown. John is his _____ name.[ ]

A. first

B. last

C. family

D. middle

答案

答案：A

选择题

I walked slowly through the market, where people _____ all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.

A. sell
B. were selling
C. had sold
D. have sold

单项选择题

如果一个类至少有一个纯虚函数，那么就称该类为( )。

A．抽象类

B．虚基类

C．派生类

D．以上都不对