参考答案

正确答案：C
解析：题目考查“这个趣闻的最可笑的部分”。第一段：Then everyone faced their own laptops and talked to each other by sending messages in the chatting group in the same room．Their dorm was silent the Whole night．The only sound came from tapping the keyboard．Before they went to bed that night，all of them sighed and said。“that’s ridiculous．”通过这句话可知，住在同一宿舍的人互相只通过网络聊天，就是他们自己也感觉这“太荒谬了”。据此判断，应选择C。