Mary thinks that people don’t need to do much travel nowadays as a result of ______. A. less emphasis on personal contact B. advances in modem telecommunications C. recent changes in people’s concepts D. more potential damage to the area 参考答案:B 答案解析:[考点] 本题的设题点在因果关系处 [精析] 对话中玛丽提到机场这一概念已经过时了,然后解释说:“随着现代技术的发展,将来我们没必要那么频繁地旅行了。”后文中玛丽也举了用视频电话进行商业