class Animal{ Animal getOne(){return new Animal();}} class Dog extends Animal{ //insert code here } class AnimalTest{ public static void main(String[] args){ Animal[] animal={ new Animal(), new Dog()}; for(Animal a:animal){ Animal x= a.getOne(); } } } 和代码: 3a.Dog getOne() { return new Dog();} 3b.Animal getOne() { return new Dog();} 第3行中插入的哪项编译且运行无异常?
The blue whale is()largest animal in the world.
The blue whale is()largest animal in the world.
Although many people would not believe it, the mosquito is actually the most dangerous animal in Africa. While the bite of the black mamba is invariably lethal when untreated, this dreaded snake kills only a few dozen people per year. Hippopotami, with their immense strength and foul dispositions, kill hundreds of people per year in rivers and lakes, but the mosquito is still more dangerous. Mosquitoes bite hundreds of millions of people in Africa every year, and they infect over a million each year with malaria, a disease that is often fatal.
Which of the following questions would be most useful in evaluating the claim made above regarding the mosquito?
Animal welfare was a low-rated trust factor partly because consumers were reluctant to pay extra money for “animal friendly” products.____
interface Animal { void soundOff(); } class Elephant implements Animal { public void soundOff() { System.out.println(“Trumpet”); } } class Lion implements Animal { public void soundOff() { System.out.println(“Roar”); } } class Alpha1 { static Animal get( String choice ) { if ( choice.equalsIgnoreCase( “meat eater” )) { return new Lion(); } else { return new Elephant(); } } } Which compiles?()
Petroleum is a result of the()of plant or animal matter in areas which are slowly subsiding.
When intruded, a territorial animal will only perform some hostile()to warn off the intruder.
Although we tend to think that they are basically the same animal, dolphins, porpoises, and fish are not alike. Despite how similar they might seem, these three animals ______ dolphins and porpoises are mammals while fish are not.