第14题: [单项选择]Questions 19 to 21 are bused on the conversation you have just heard. A. It is used too much. B. It is more necessary than E-mail. C. It is very convenient. D. It has more problems than benefits. 参考答案:C 答案解析:[听力原文] 19-21 M: I was just reading this article about the wonders of the ancient world. A lot of