NO.PZ2023112701000078
问题如下：
Which of the following is the closest example of a one-sided network?
选项：
A.An online employment website B.A dating website for men and women C.A social network for model train collectors解释：
Correct Answer: C
C is correct. A social network for model train collectors involves a single group of users and thus is closest to a one-side network.
The others involve two user groups: employers and job-seekers in A, men and women in B.
social network for model train collectors分明是crowdsouring的模式。退一万步C如果不正确，B能把男和女分成两类？如果这也成立，我觉得除了妇科产科的网络医疗，所有network都算two-sided network了
