体育社会学研究必须以体育社会学研究必须以()为指导。
参考答案:马克思主义的哲学理论
It is an imaginary line ______ the eastern and western halves of the world and is very useful for navigation. [ ]
A. to divide
B. divided into
C. divides
D. dividing
我国法律对奥林匹克权利人的范围是如何规定的?