第4题: [简答题]We expect to arrive at the Sunny Holiday in July 25．There are nine people in our group，seven women and a married couple. The Women are happy to share rooms, but the married couple would like a double room. We hope to keep our expenses as low as possible.
第20题: [单项选择]Java语言具有跨平台技术是因为（ ）。 A. "10/10/02" B. 10/10/02 C. {10/10/02} D. #10/10/02# 参考答案:D 答案解析:DATE( )函数的返回值是日期型；TIME( )函数的返回值是字符型；DATETIME( )函数的返回值是日期时间型。
