如果要求下列程序段中的循环执行 3 次，则程序中括号里的条件应是 x = 1 Do x = x + 3Loop Until ( _______ )

单项选择题执行下列程序段后，变量 s 的值是 Dim s As long, x As Integer s = 0 : x = 1 Do While ( x < 10 ) s = s + x x = x + 2Loop

单项选择题执行下列程序段后，变量 intsum 的值是 Dim intsum As Integer Dim I As Integer intsum = 0 For I=20.2 To 5 Step -4.7 intsum = intsum + INext I