VB程序选择题

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1、问题15.56分  保存   单击窗体，根据输入框所输入的百分制成绩score，在窗体上显示相应的等级，即“优秀”(score>=90)、“良好”(80<=score<90)、“中”(70<=score<80)、“及格”(60<=score<70)、“不及格”(score<60)。 PrivateSubForm_click()            (1)          score=Val(InputBox("请输入成绩"))  If           (2)         Then      Print"优秀"  

2、ElseIfscore>=80Then      Print"良好"  ElseIfscore>=70Then      Print"中"            (3)                        (4)          Else      Print"不及格"            (5)        EndSub                                                                                          (1)  

3、                                                                                         (2)                                                                                           (3)                                                                               

4、            (4)                                                                                           (5) 1.Print"及格"2.score>=903.DimscoreAsInteger4.EndIf5.ElseIfscore>=60Then   问题25.56分  保存   单击窗体，从输入框InputBox输入一个整数，判断其是否为素数。例如输入7，则屏幕上显示“7是素数”；如果输入的是9则屏幕上显示“9不

5、是素数”。PrivateSubForm_Click()   DimiAsInteger,nAsInteger,PrimeAsString   n=Val(InputBox("n="))   Ifn<2Then                  (1)           Else                  (2)                   IfnModi=0ThenExitFor           Nexti                  (3)                            

6、      (4)                Else           Prime="不是素数"        EndIf   EndIf             (5)        EndSub                                                                                          (1)                                                                     

7、                      (2)                                                                                           1.Ifi>n-1Then(3)                                                                                           (4)                                       

8、                                                    (5) 2.Prime="是素数"3.Printn&Prime4.Prime="不是素数"5.Fori=2Ton-1   问题35.56分  保存   设计一个用户身份验证程序， 具体要