class 变复数

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• would you like some pears?--No,thanks.I think there ___ enough for usA.is B.are C,has been D.had beenc是不是应该改为have been因为pears 是复数,B也错了,因为要用完成时态请问,你觉得呢?
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• 10道C++判断题1．使用关键字class定义的类中缺省的访问权限是私有(private)的.2．作用域运算符（：：）只能用来限定成员函数所属的类.3．析构函数是一种函数体为空的成员函数.4．构造函数和析构函数都不能重载.5．说明或定义对象时,类名前面不需要加class关键字.6．对象成员的表示与结构变量成员表示相同,使用运算符.或->.7．所谓私有成员是指只有类中所提供的成员函数才能直接使用它们,任何类外的函数对它们的访问都是非法的.8．某类中的友元类的所有成员函数可以存取或修改该类中的私有成员.9．可以在类的构造函数中对静态数据成员进行初始化.10．如果一个成员函数只存取一个类的静态数据成员,则可将该成员函数说明为静态成员函数.写出对的序号就行,要不回答太麻烦了
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