问题 单项选择题

下面关于列表框和组合框的陈述中,正确的是( )。

A.列表框可以设置成多重选择,而组合框不能

B.组合框可以设置成多重选择,而列表框不能

C.列表框和组合框都可以设置成多重选择

D.列表框和组合框都不能设置成多重选择

答案

参考答案:A

解析: 列表框提供一组条目(数据项),用户可以从中选择一个或多个条目。能显示其中的若干条目,用户可通过滚动条浏览其他条目。 组合框与列表框类似,有关列表框的属性、方法,组合框同样具有(MultiSelect除外),其区别为: ①对于组合框来说,通常只有一个条目是可见的。用户可以单击组合框上的下箭头按钮打开条目列表,以便从中选择。所以,相比列表框,组合框能够节省表单中的显示空间。 ②组合框不提供多重选择的功能,没有MultiSelect属性。 ③组合框有两形式:下拉组合框和下拉列表框。通过设置Style属性可选择想要的形式。

阅读理解

阅读理解。

     In many parts of the world, people live to healthy old ages.  What is the secret of their long lives?

     Three things are very important:  fresh air, fresh food and a simple way of life. People living in 

 Himalayas (喜马拉雅山) are famous for their long and healthy lives. They work near their homes in the

 clean mountains.  They do not have buses, cars or trains.  They do not sit all day in busy offices.  They

 take more exercise and eat less food than people in the cities.

    They eat vegetables grown by themselves.  They drink milk takcn from their own cows.  For years, the

  Hunzas of the Himalayas do not need doctors, for there is not much illness.  They are happy and healthy

  people.

1. Which is NOT the life of the people living in Himalayas?

    A. They work near their homes in the clean mountains.

    B. They take more exercise and eat more food than people in the cities.

    C. They eat vegetables grown by themselves.

    D. Thcy drink milk taken from their own cows.

2.  Which one is NOT true about the people living in Himalayas?

    A. They live in a simple life in the mountains.

    B. They grow vegetables and milk cows thenselves.

    C. When thcy're ill, they do not go to see the doctors.  .

    D. They do not sit all day in busy offices.

3. Which is NOT the secret of long life?

    A. Fresh air.    

    B.  Fresh food.

    C. A simple way of life.    

    D. A simple way of eating.

4. What are the Hunzas famous for?

    A. Vegetables.    

    B. Milk.

    C. Food.        

    D.  Their long and healthy lives.

5.  They do not need doctors, for_____.

    A. the doctors are not good    

    B. there is not much illness

    C. there is no iliness          

    D. they are happy

单项选择题