2020年9月计算机二级VB基础巩固题及答案(6)

1.以下程序段：

Private Sub Form_Load( )

Dim Nop As Integer, Op As String * 1

Num1 = 3

Num2 = 2

Nop = val(Inputbox("请输入1-4之间的整数"))

Select Case Nop

Case 1

Op = "+"

Result = Num1 + Num2

Case 2

Op = "-"

Result = Num1 - Num2

Case 3

Op = "×"

Result = Num1 * Num2

Case 4

Op = "÷"

Result = Num1 / Num2

End Select

Label1= Num1 & Op & Num2 & "=" & Result

End Sub

窗体运行后，输入2，则label1的标题显示结果为(B)(单)

A.3+2=5

B.3-2=1

C.3×2=6

D.3÷2=1.5

2.以下程序段：

Private Sub Form_Load( )

Dim Nop As Integer, Op As String * 1

Num1 = 3

Num2 = 2

Nop = val(Inputbox("请输入1-4之间的整数"))

Select Case Nop

Case 1

Op = "+"

Result = Num1 + Num2

Case 2

Op = "-"

Result = Num1 - Num2

Case 3

Op = "×"

Result = Num1 * Num2

Case 4

Op = "÷"

Result = Num1 / Num2

End Select

Label1= Num1 & Op & Num2 & "=" & Result

End Sub

窗体运行后，输入3，则label1的标题显示结果为(C)(单)

A.3+2=5

B.3-2=1

C.3×2=6

D.3÷2=1.5

3.以下程序段：

Private Sub Form_Load( )

Dim Nop As Integer, Op As String * 1

Num1 = 3

Num2 = 2

Nop = val(Inputbox("请输入1-4之间的整数"))

Select Case Nop

Case 1

Op = "+"

Result = Num1 + Num2

Case 2

Op = "-"

Result = Num1 - Num2

Case 3

Op = "×"

Result = Num1 * Num2

Case 4

Op = "÷"

Result = Num1 / Num2

End Select

Label1= Num1 & Op & Num2 & "=" & Result

End Sub

窗体运行后，输入4，则label1的标题显示结果为(D)(单)

A.3+2=5

B.3-2=1

C.3×2=6

D.3÷2=1.5