CAT是()。

A.CAT 3126B

B.CAT C－18

C.CAT C－15

D.CAT C－13

A、A.Cat cat = (Cat)new Animal();

B、B.Animal a = new Cat(); Cat cat = (Cat) a;

C、C.Animal animal = new Cat();

D、D.Animal a = new Dog(); Cat cat = (Cat) a;

A.CAT 3226B

B.CAT 3126B

C.CAT 3126A

A、public void Cat() { … }

B、public Cat(string name) { … }

C、public cat(string name, int age) { … }

D、public Cat() { … }

A.CAT 3226B

B.CAT 3126B

C.CAT 3126A

A.CATⅢ

B.CATⅡ

C.CATⅠ

D.CATⅣ

A.CATⅢ

B.CATⅡ

C.CATⅠ

D.CATⅣ

A.CAT C13

B.CAT C15

C.CAT C18

D.CAT 3126B

A、Dog[] a = new Dog[5]; a[0] = new Cat();

B、Animal a = new Animal[5]; a[0] = new Animal();

C、Dog[]a = new Dog[5]; a[0] = new Animal();

D、Cat[]a = new Cat[5]; a[0] = new Cat();

The author wants to write ______.

A．a clog book

B．a cat book

C．a dog and cat book

D．a dog and a cat book

A．We should cat more meat than vegetables.

B．We should cat more vegetables than meat.

C．We should cat different kinds of vegetables.

D．We should cat fruit, cereals, fish, meat and vegetables.