举一反三
- In the sentence "The dog is a very smart animal." the article before the word "dog" is a(n) _____ article.
- In the sentence "Knowledge is power." the article before the word "knowledge" is a(n) _____ article.
- ______(Dog)dog is ______ useful animal.
- class Animal { public Animal() { System.out.println("Animal!"); } } public class Dog extends Animal{ public Dog() { System.out.println("Dog!"); } public static void main(String[] args) { Dog dog=new Dog(); } }
- Any analytical definition of the word “dog” would also be an analytical definition of the word “animal.”
内容
- 0
How many expressions with the word dog appeared in the article?[音频] A: 3 B: 5 C: 7 D: 9
- 1
Animal 是抽象类 ，Dog类和Cat类继承了Animal 。Animal dog = new Dog（）；的写法是否正确？
- 2
Suppose module puppy depends on module dog and module dog depends on module animal. Fill in the blank so that code in module dog can access the animal.behavior package in module animal.module animal { ___________ animal.behavior;} A: export B: exports C: requires D: requires transitive
- 3
在前面几题的基础上，有子类Dog和Cat继承了父类Animal，如下空格的输出是以下哪个选项？dog = Dog(coco,small); cat = Cat(kawaii)>>> isinstance(dog, Animal)___________>>> isinstance(cat, Animal)___________>>> isinstance(dog, Dog)___________>>> isinstance(dog, Cat)____________
- 4
下列各种java类的定义，那种是错误的 A: class Animal{}class Dog extends Animal {} B: final class Animal{}class Dog extends Animal{} C: abstract class Animal{}class Dog extends Animal{} D: public class Animal{}class Dog extends Animal{}