(完整版)浙江省2006年春二级VB考试试卷及答案[1]

2006年春浙江省高等学校计算机等级考试试卷（二级Visual Basic）说明: (1)考生将所有试题的答案填写在答卷上.其中题1～试题6,请在答卷上各小题正确选项的对应位置处填“√”；（2）请将你的准考证号的后五位填写在答卷右下角的指定位置内；（3）考试时间为90分钟；试题1（每小题3分，共15分）阅读下列程序和程序，在每小题提供的若干可选答案中，挑选一个正确答案。

【程序说明】界面设计如上图所示，程序运行时要求有以下功能：·按Commandl（出题）后随机生成两个两位正整数存入模块级变量a、b且a＞b，并分别在Labell Labe12中显示，此后Commandl不可用；·在Textl中输入结果、按回车后，以消息框显示运算正确与否、累计所完成题数以及做错的题数，Commandl恢复为可用；·按Command2(退出)后以消息框显示所完成题数以及做错的题数，退出。

【程序】Dim n As Integer, n_error As Integer(1) Dim a As Byte, b As byte, c As BytePrivate Sub Command1_Click()a = 10 + Rnd * 89:b = 10 + Rnd * 89If a < b Then (2) B、c=a: a=b: b=cLabel1.Caption = a: Label2.Caption = bn = n + 1: Text1.Text = "": Command1.Enabled = FalseEnd SubPrivate Sub Text1_ (3)KeyDown (keyAscii As Integer)If keyAscii <> 13 Then (4) Exit Sub '回车键的ASCII 码值为13If a - b = Val(Text1.Text) ThenMsgBox ("回答正确")ElseMsgBox ("回答不正确")n_error = n_error + 1End IfCommand1.Enabled = TrueEnd SubPrivate Sub Command2_Click()MsgBox ( (5) “共”＆ n ＆“题，错”＆ n_error ＆“题”)EndEnd Sub【供选择的答案】（1）A、’小学生两位数减法训练程序 B、a=0: b=0 : c=0C、n=0: n_error=0D、Dim a As Byte, b As byte, c As Byte(2) A、b=a: a=b B、c=a: a=b: b=cC、a=b: b=aD、c=a: b=a: a=c(3) A、KeyPress B、Change C、KeyDown D、KeyUp(4) A、Exit Sub B、KeyAscii=13 C、KeyAsecii=0 D、Exit Do(5) A 、“共”＆ n ＆“题，错”＆ n_error＆“题”B 、“共n 题，错n_error 题”C 、“共”+ n +“题，错”＋ n_error +“题”D 、共＆ n “题，错”＆ n_error＆“题”试题2（每小题3分，共12分）阅读下列程序说明和程序，在每小题提供的若干可选答案中，挑选一个正确答案。

【程序说明】输入n 后，再输入n 个数a 1,a 2,…，a n ,按照下列公式计算s 的值并显示。

v= s=【程序】Private Function f( (6) x() As Single, n As Integer ) As SingleDim i As IntegerFor i = 1 To n: f = f + x(i): Next i End FunctionPrivate Sub command1_Click()Dim n As Integer, a() As Single, i As Integer Dim V As Single, s As Single n = InputBox("输入数据个数")（7） ReDim a(n)For i = 1 To na(i) = InputBox("a(" & i & ")=", "输入各数组元素")Next i V = f(a, n) / n For i = 1 To ns = (8)s+(a(i)-v)^2a 1+a 2+…a nn (a 1-v)2+(a 2-v)2+…+(a n -v)nNext i(9) Print s^0.5/nEnd Sub【供选择的答案】（6）A、x() As Single, n As IntegerB、x(n) As SingleC、a As Single,n As IntegerD、n As Integer,x() As Single（7）A、Dim a(n) As SingleB、ReDim a()C、Dim a (n)D、ReDim a(n) （8）A、(a(i)-v)*(a(i)-v)B、s+a(i)-v^2C、s+(a(i)-v)^2D、(a(i)-v)^2 （9）A、s=s^0.5/nB、Print s^0.5/nC、Print Sqr(s)D、Sqr(s)/n试题3（每小题3分，共15分）阅读下列程序说明和程序，在每小题提供的若干可选答案中，挑选一个正确答案。

【程序说明】·图片框控件P1、P2除Name属性外均取缺省值，将鼠标在P1拖动绘制矩形框（边框颜色通过用对话框指定）：鼠标按下处为矩形左上角，鼠标抬起处为矩形右下角；·鼠标抬起后，将P1中矩形区域内的图象在P2中重新绘制，如下图所示。

【程序】(10) Dim xl As Single,y1 As SinglePrivate Sub p1_MouseDown(Button As Integer, Shift As Integer, _X As Single, Y As Single)xl = X: y1 = YEnd SubPrivate Sub p1_MouseUp(Button As Integer, Shift As Integer, _X As Single, Y As Single)Dim j As Single, i As Single, jk As Single, ik As SingleDim (11) As Longjk = P2.ScaleWidth / (X - xl): ik = P2.ScaleHeight / (Y - y1)CommonDialog1.Action = (12) 3P1.Line (xl, y1)-(X, Y), CommonDialog1.Color, BFor j = xl To XFor i = y1 To Yc = (13)P1.Point(j,i) '读取该点处的颜色值(14) P2.PSet ((j-xl)*jk,(i-y1)*ik),cNext i, jEnd Sub【供选择的答案】（10）A、Dim x As Single ,y As Single B、Dim x2 As Single,y2 As SingleC、Public xl As Single ,yl As SingleD、Dim xl As Single,y1 As Single （11）A、c As Long B、c As Integer C、c As Single D、c As Double （12）A、1 B、2 C、3 D、4（13）A、P1.Pset(j,i) B、P2.Pset(j,i) C、P1.Point(j,i) D、P1.Point(i,j) （14） A、P2.PSet ((j-xl)*jk,(i-y1)*ik),cB、P1.Pest((j-xl)*jk,(i-yl)*ik),cC、P2.PSet((i-yl)*ik,(j-xl)*jk),cD、P1.Pset((i-yl)*ik,(j-x1)*jk),c试题4（每小题3分，共9分）阅读下列程序并回答问题，在每小题提供的若干可选答案中，挑选一个正确答案。

【程序】Private Sub Form_Load()Text1.Text = "": List1.ClearEnd SubPrivate Sub Text1_Keypress(K As Integer)Dim n As Integer'If K>=Asc("0")And k<=Asc（"9"）Then K=0If K = 13 ThenList1.AddItem Text1.Text, nn = n + 1Text1.Text = ""End IfEnd Sub(15) 运行时在文本框控件Textl中依次输入3个以回车结束的字符串“abc34”、“xy12＄”、“+-*/”,列表框中各表项依次为：A、abc34B、+-*/ C 、abc D、+-*/xy12$ xy12$ xy$ xy$+-*/ abc34 +-*/ abc(16) 如果将语句Dim n As Integer 用Static n As Integer替换，运行时在文本框中依次输入3个以回车结束的字符串“abc34”、“xy12$”、“+-*/”.列表框中各表项依次为：A、abc34 B、+-*/ C、abc D、+-*/xy12$ xy12$ xy$ xy$+-*/ abc34 +-*/ abc(17) 如果将语名Dim n As Integer 后一条语句前的注释符删除，运行时在文本框中依次输入3个以回车结束的字符串“abc34”、“xy12$”、“+-*/”，列表中各表项依次为：A、abc34B、+-*/C、abcD、+-*/xy12$ xy12$ xy$ xy$+-*/ abc34 +-*/ abc试题5（每小题3分，共12分）阅读下列程序并回答问题，在每小题提供的若干可选答案中，挑选一正确答案。

【程序】Private Sub f(s As String)Dim i As Integer, n As Integer, c As Stringn = Len(s)If n Mod 2 = 1 Then c = Mid(s, n \ 2 + 1, 1)For i = 1 To Len(s) \ 2c = Mid(s, Len(s) + 1 - i, 1) + c + Mid(s, i, 1)Next is = cEnd SubPrivate Sub Command1_Click()Dim x As Stringx = InputBox("x=")Call f(x)Print xEnd Sub(18) 单击Commandl后输入“abc”，窗体上显示结果为：A、cbaB、bcaC、abcD、acb(19) 单击Commandl后输入“abcd”，窗体上显示结果为：A、abdcB、cdabC、abcdD、bcad(20) 如果将Sub过程f首句改为Private Sub f(Byval S As String),单击Commandl 后输入“abcd”，窗体上显示结果为：A、abdcB、cdabC、abcdD、bcad(21) 如果将Sub 过程f首句改为Private Sub f (Byref S As String),单击Commandl 后输入“abcd”，窗体上显示结果为：A、abdcB、cdabC、abcdD、bcad试题6（每小题3分，共9分）阅读下列程序并回答问题，在每小题提供的若干可选答案中，挑选一个正确答案。