问题 填空题

【 】类是由Java编译器自动生成的,它伴随每个类。

答案

参考答案:Class

解析:本题考查Java中的Class类。注意掌握Java中比较特殊的类,比如Object类、Class类、System类等。Object是所有类的根,它所包含的属性和方法被所有类继承。Class类是由编译器自动产生的一个特殊类,伴随每个类。System是一个final类,所有的方法都用类变量来调用,不能实例化,主要提供了标准输入/输出和系统环境信息的访问、设置。

阅读理解

Computers Help Fire Fighters

In Kansas City, Missouri, a computer helps fire fighters. The computer contains information about every one of the 35000 street addresses in the city. When fire fighters answer a call, the computer will give them important about the burning building, its position and almost all the ways of helping fire fighters with the problems facing them. For example, it can give medical information about invalids living in a burning building. With this information, the fire fighters can take special care to find these sick persons and carry them away quickly and safely.

The Kansas City computer system also keeps a medical record of each of the city’s 9000 fire fighters. The kind of information is especially useful when a hospital can treat the injured. With this information, doctors at the hospital can treat the injured fire fighters more quickly and easily.

1. Missouri is most likely the name of ___________.

A. a well—known river                   B. the head of the fire fighters

C. a state in the USA                     D. a new kind of computer

2. The computer can give ______________.

A. useful and useless information about the city

B. useful information about everyone living in the city

C. useful information about every street address in the city

D. information about every town around the city

3. In this passage the word “invalid” means a person __________.

A. who is badly injured               B. who is helped by firemen

C. who wants to be a firemen          D. who has become weak through illness or injury

4. If injured, the firemen will ___________.

A. be treated at once with the computer’s help    B. hardly get any treatment

C. ask doctors and nurses for help             D. be taken to hospital by the computer

单项选择题