The authors main purpose of mentioning Facebook is to______. A．compare Facebook with face-to-face communication B．emphasize the supplementary function of Facebook to daily communication C．illustrate the importance of Facebook in helping people to relieve loneliness D．introduce some ways to make friends on Facebook
A. A．compare B.emphasize C.illustrate D.introduce
【参考答案】
B 细节题。第六段第二句引用卡乔波的话来强调这些社交网站应当成为日常交流方式的补充而不是替代品，因此选[B]。[......