The main types of social networking services are those that contain category places (such as former school year or classmates), means to connect with friends (usually with self-description pages), and a recommendation system linked to （）.
- A.net
- B.interests
- C.others
- D.trust
正确答案及解析
正确答案
D
解析
本考题考查的知识点为沟通。
社会网络服务的主要类型是那些含有分类区域（如母校时光或同班同学），这意味着与朋友（通常带有自我介绍网页）连接，并连接到一个（ ）的推荐系统。
A、网络
B、兴趣
C、其他
D、信任
