A-A+ 27. Which is the quickest and cheapest way to 2022-08-06 08:24:01 问答库 阅读 177 次 问题详情 27. Which is the quickest and cheapest way to send messages to your friends?A. By post B. By e-mail C. By telephone D. By satellite 参考答案 正确答案:B27.B【解析】由文章第二段可知。