Areas of fertile soil called deltas, usually （） are formed by mud deposited at the mouth of a river. A: triangular in shape B: their shape is triangular C: they have a triangular shape D: triangular shape

The cake is ____ the shape of a heart.

已定义一个Shape抽象类，在此基础上派生出矩形Rectangle和圆形Circle类，二者都有GetPerim（）函数计算对象的周长，并编写测试main（）函数。class Shape{public:Shape(){}~Shape(){}virtual float GetPerim()=0;}

下列选项中的接口声明正确的是______。 A: interface Shape{...} B: abstract private interface Shape extends Area{...} C: private interface Shape{...} D: protected privated interface;

有形状类Shape，子类圆类Circle。执行语句Shape s = new Circle()；后， 以下哪个表达式能判断s是Circle的实例（ ） A: s is Shape B: s instanceof Circle C: s.instanceof Circle D: s instanceof Shape

Does art ______ society, or shape it?

Shape Sequence是顺序（）。

‌The classification and description of English vowels are based on ___________________.‎ A: the position of the tongue B: the shape of the lips C: the shape of vocal tract D: all of the above

通过设置Shape控件的( )属性可以绘制多种形状. A: Shape B: BorderStyle C: FillStyle D: Style

如果Triangle类继承自Shape类,那么Shape类中的哪些变量可以用于Triangle类中? ()