认为社会性别制度起源于亲属制度的人是盖尔·鲁宾。
参考答案：对
—Well, I do think the rabbit is a beautiful, gentle animal which can run very fast.
—_____. [ ]
A. So it is.
B. So is it.
C. So does it.
D. So it does.
FTP可以实现资源共享，它提供了一个免费的公共帐号是（）。
A.System
B.adminstrator
C.Anonymous
D.必须事先申请
