Which of the following is the most important element of Koch’s germ theory of disease? The animal shows disease symptoms when ( ) A: the animal has been in contact with a sick animal. B: the animal has a lowered resistance. C: a microorganism is observed in the animal. D: a microorganism is inoculated into the animal.

Passage 1 -12 A: He saw another animal behind the dead animal. B: He saw a gun beside the dead animal. C: He saw a man behind the dead animal. D: He saw people behind the dead animal.

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

In India the cow is a __________ and protected animal.

______(Dog)dog is ______ useful animal.

The dolphin is an _____ animal. A: intelligent B: intellectual

In Western countries, _____ will not eat any food related to an animal.

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{}

Which animal is not the animal in Chinese Zodiac?

若Animal是Cat,Dog的父类，则下列选项中，正确的是（） A: Animal animal = new Cat(); B: Cat cat = (Cat)new Animal(); C: Animal animal = new Dog(); D: Cat cat = (Cat)new Dog();