单选题
初级
2010-11-01
Questions
What is the most expensive type of call?
参考答案
A
答案解析
题目问题：拔打哪种电话收费最高?从原文第二段找信息：有接线员帮助的电话较贵。但注意：Even rrlore expensive is a reservecharge call where the person who receives thecall pays．更贵的是接电话人付费的预订收费电话。选项A正是预订收费电话。故选A。
