听对话,回答问题。 1. What does the man want to buy? A. A pair of glasses B. A pair of trousers C. A pair of shoes 2. What's the size? A. Size 6 B. Size 7 C. Size 8 3. How much will the man pay? A. 50 dollars B. 25 dollars C. 15 dollars
【单选题】要求函数的功能是:从参数 str 字符串中删除所有参数 ch 所指定的字符,返回实际删除字符的个数,删除后的字符串仍在 str 中,为此某人编写了函数 DelChar 如下: Function DelChar(str As String, ch As String) As Integer Dim n%, st$, c$ st = "" n = 0 For k = 1 To Len(str) c =...