题目内容

2. There are several classroom buildings in our campus, and the training center is at the back of it.

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3.Leaving home for college, I have a little homesick, but feel excited at heart.

She has a bright voice and perfect sense of music, so she was born to be a singer.

It’s a quarter past 8 o’clock. It’s time for us to have the first class.

对下面的代码说法正确的是()classBaseclass{protectedBaseclass(stringa,stringb){Console.WriteLine("基类中构造函数");}}classDerivcedlcass:Baseclass{publicDerivcedlcass(stringa,stringb):base(a,b){Console.WriteLine("派生类中的构造函数");}}

A. 代码无错误,派生类可以实例化，基类只有通过派生类实例化
B. 代码有错误,派生类的base关键字中不应带有参数
C. 代码无错误,基类可以实例化
D. 代码有错误,base关键字中的参数应改为"base(c,d)"