下面代码的执行结果是( )。>>> x = "Happy Birthday to you!">>> x * 3 选项:系统报错|Happy Birthday to you!|Happy Birthday to you!Happy Birthday to you!Happy Birthday to you!|'Happy Birthday to you!Happy Birthday to you!Happy Birthday to you!' 下面 结果是 报错 发布时间:2024-04-14 01:23:35