[解析]
(1)B.概括总结题.从后面的句子:However,it may be even more difficult for the person you are talking with to understand you.可知然而,你交谈的人可能更难理解你.即别人未必听得懂你的话,你要说的清楚,慢一些( Speak slowly and clearly).故选B.
(2)F.理解判断题.从这段的第一句话:Don't pretend to understand everything you hear over the telephone.可知不要装做理解之电话里听到的东西,要确保听得懂别人的话.F项:Make sure you understand the other speaker.确保你能理解对方的电话提示.符合文意,故选F.
(3)D.联系下文题.从第一句话:Ask another student to practice talking on the phone with you.可知让另外一个学生在电话里和你练习,即要和朋友经常练习(Practice often with a friend).故选D.
(4)A.细节理解题.从这段的句子:After business hours,you can call and listen to recorded messages.可知在过后,你可以回忆或者听记录的内容,所以建议我们要听业务记录.A项:Use business recordings.使用商业录音.符合文意,故选A.
(5)C.概括总结题.从这段的:Take the time to learn how to answer the phone and say goodbye in a polite manner,as well as all the various ways one can start and end a conversation casually.建议我们要花时间去学习如何接电话,如何有礼貌的交谈,即要学习打电话的礼仪.故选C.