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问题 单项选择题

在窗体上画一个名称为CommonDialog1的通用对话框，一个名称为Command1的命令按钮，要求单击命令按钮时，打开一个保存文件的对话框，该窗口的标题为“Save”，缺省文件名称为“SaveFile”，在“文件类型”栏中显示*txt，则能够满足上述要求的程序是（ ）。

A． java

B． javac

C． javap

D． javadoc

答案

参考答案：B

解析：接口中所有的方法都是abstract属性的，即在父类中不定义方法体，而在子类中进行覆盖父类的方法。接口中的变量都必须是static final属性的。

阅读理解

阅读理解。

     Our school has a big library. We often go there. Today is Sunday. Lily and I are in the library. In the

library there are some signs on the wall. The signs mean (意思是) different (不同的) things. We know them.

Don't shout in the reading room. Don't drink or eat here. Don't litter (乱扔东西) in the library.

     I see a man smoking in the reading room. I go to him and say, "Sir, you can't smoke here. Look at the sign.

It says 'No smoking'. You can smoke in the smoking room." The man says sorry.

1. Which sign means "Don't litter"?

        A               B                     C              D

2. What are there on the wall of the library?

A. Pictures

B. Maps

C. Signs

D. Photos

3. The man can smoke __________.

A. in the reading room

B. in the smoking room

C. anywhere (任何地方) in the school

D. in the library

4. Where are Lily and I?

A. In the park.

B. At the cinema.

C. In a shop.

D. In the library.

5. In the library __________.

A. you can eat or drink

B. you can smoke

C. you can't talk loudly (大声地)

D. you can litter

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单项选择题

在窗体上画一个名称为Text1的文本框和一个名称为Command1的命令按钮，然后编写如下事件过程：
Private Sub Command1_Click()
Dim arrayl(10, 10)As Integer
Dim i, j As Integer
For i=1 To 3
For j=2 To 4
arrayl(i, j)=i+j
Next j
Next i
Text1. Text=arrayl(2, 3)+arrayl(3, 4)
End Sub
程序运行后，单击命令按钮，在文本框中显示的值是______。

A．12

B．13

C．14

D．15
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