问题 单项选择题

假定有一个菜单项,名为MenuItem,为了在运行时使该菜单项不可见,应使用的语句为( )。

A.MenuIteEnabled=False

B.MenuIteEnabled=Trme

C.MenuIteVisible=True

D.MenuIteVisible=Flase

答案

参考答案:D

解析: Enabled属性用来设置一个窗体或控件是否能够对用户产生的事件作出反应,设为False时,菜单项在程序运行时失效,不响应用户的操作,设为True时,菜单项在程序运行有效,能响应用户的操作:Visible属性用来设置窗体或控件是否可见,设为False时,控件不可见,设为True时,控件可见。

选择题
阅读理解

阅读理解。

     Different people have different ideas about time. People in the USA think that it is important to know

the time. In cities in America, there are clocks in stations, factories and other buildings. Radio tells the

correct time during the day. Most Americans also have watches with them wherever they go. They want

to do certain things at certain time. They don't like to be late.

     But time is not so important to everybody in the world. When you visit a country in South America,

you will find that people there don't like to rush. If you had an appointment with somebody, he could

probably be late, because he may not want to arrive on time.

     In South America, even the radio program may not begin on time. The men on the radio may not think

it is important to tell the exact time. People in South America think that clocks or watches are just machines.

They think that you let a clock or a watch control your life if you do everything on time.

1. Time is very important to ______.

A. people in North America

B. people in South America

C. the men on the radio

D. everybody in the world

2. The underlined word "control" probably means ______ in Chinese.

A. 改变

B. 控制

C. 创造

D. 摆脱

3. People in South America think ______.

A. they wouldn't like to meet friends in public places

B. they don't have to do certain things at certain time

C. it's wrong of a radio station to tell wrong time

D. it's their habit to be a little earlier

4. What is the best title of the passage?

A. Is your life relaxing?

B. Must radio tell the exact time?

C. Different people have different ideas about time.

D. Differences between North and South America are everywhere.