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问题 单项选择题

关于以下程序代码的说明正确的是 ( )
(1)class HasStatic
(2)private static int x=100；
(3)public static void main(String args[])
(4)HasStatic hs1=new HasStatic()；
(5)hs1.x++；
(6)HasStatic hs2=new HasStatic()；
(7)hs2.x++；
(8)hs1=new HasStatic()；
(9)hs1.x++；
(10)System.out.println("x="+x)；
(11)
(12)

A．(5)行不能通过编译，因为引用了私有静态变量

B．(10)行不能通过编译，因为x是私有静态变量

C．程序通过编译，输出结果为：x=103

D．程序通过编译，输出结果为：x=100

答案

参考答案：C

解析： 该程序能够通过编译，程序中声明了2个对象hs1和hs2，而hs1初始化两次，虽然x被定义为私有的变量，但在本类中是可以调用的。所以输出结果为x=103。

阅读理解

阅读理解

     It is a fine Saturday morning. Lily and Lucy get up at six thirty. They want to go to the Great Wall(长城) with

their mother. At seven fifty they are in a big bus to the Great Wall. There are forty people in it. Some of them are

Americans; some are English. There are two Chinese in the bus, too. One is a woman. She is driving the bus. The

other is a young man. He's now talking about the Great Wall in English. They are listening to him. At about nine

o'clock they get to the Great Wall.

1. Lily and Lucy want to go to the Great Wall _______.

A. in a fine day

B. on Sunday morning

C. on Saturday morning

D. in a cloudy morning           

2. There are _______ English people in the bus.

A. forty

B. two

C.some

D. few

3. The young Chinese man is _______.

A. driving the bus

B. talking to the people

C. listening to him

D. doing nothing

4. They get to the Great Wall at about _______.

A. nine o'clock

B. seven fifty

C. ten o'clock

D. eight o'clock

5. There are two _______ in the bus.

A. Americans

B. English girls

C. Chinese

D. Japanese girls
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单项选择题

能精确传递运动的传动机构是（）。

A.齿轮传动

B.带传动

C.链传动

D.液压传动
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