听力原文：The tax return does not show accrued income.(8)A．The tax return is not shown in the income.B．The income is not accurate in taxation.C．The tax should be returned according to the income.D．The tax return is not in accordance with the income that should

有如下程序：

include＜iostream＞

using namespace std；

class Wages{ //“工资”类

double base； //基本工资

double bonus； //奖金

double tax； //税金

public：

Wages(double CBase，double CBonus，double CTax)：

base(CBase)，bonus(CBonus)，tax(CTax){}

double getPay()const； //返回应付工资额

Wages operator+(Wages w)const； //重载加法

}；

double Wages::getPay()const{return base+bonus-tax;}

Wages Wages::operator+(Wages W)const{

return Wages(base+w.base，bonus+w.bonus，tax+w.tax)；

}

int main(){

Wages w1(2000,500,100),w2(5000,1000,300)；

cout＜＜(w1+w2).getPay0＜＜end1；

return 0；

}

程序的输出结果是

有如下程序 #include＜iostream＞ using namespace std; class GA{ public: virtual int f( ) {return 1;} }; class GB:public GA{ public: virtual int f() {return 2;} }; void show(GA g){cout＜＜g.f();} void display(GA&g){cout＜＜g.f();} int main() { GA a;show(A) ;display(A) ; GB b;show(B) ;display(B) ; return 0; }运行时的输出结果是

A．1111

B．1211

C．1112

D．1212