第27题: [简答题]Add up all that effort，and you can see that adding a new customer to your business can take quite an investment in time，money，and energy. Business expels who study this kind of thing figure that is costs something like five times more to serve a new customer than a repeat customer． 参考答案:
所有的努力加起来，你就能看到要争取一个新客户需要投入很多的时间，金钱和精力。研究这类事情的行业专家指出，服务一个新顾客要比一个老顾客多花5倍的成本。
答案解析:
这段文字主要讲的是服务新顾客和回头客的差别。翻译好这段文字重点注意以下的词和短语：add up (加上)，investment (投资)；who study... 定语从句；five times
