题目
Public transportation is____with more and more automobiles on roads.
A. more bad
B. crowd
C. tense
D. worsening
第4题
写出程序的输出结果
public abstract class A
{
public A()
{
Console.WriteLine('A');
}
public virtual void Fun()
{
Console.WriteLine("A.Fun()");
}
}
public class B: A
{
public B()
{
Console.WriteLine('B');
}
public new void Fun()
{
Console.WriteLine("B.Fun()");
}
public static void Main()
{
A a = new B();
a.Fun();
}
}
第6题
A.public void Test(){}
B.public Test() {}
C.public static Test(){}
D.public static void Test(){}
第7题
A.public abstract void add();
B.public abstract add();
C.public abstract void add(){ }
D.public virtual add();
第9题
A.public void method(int m){…}
B.public int method(){…}
C.public void method2(){…}
D.public int method(int m, float f){…}
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