__________seems to be a strong competition in China for senior high students to enter college or universityy .
A.It B.There

我认为B There正确。
There seems to be a strong competition in China for senior high students to enter college or university.
在中国，高中入大学好像有很激烈的竞争（似乎竞争很激烈，看来竞争很激烈）。
There doesn't seem to be much hope that he'll come / of him coming.
看来他来的希望不大。

【结构】There seems (to be) sth. 意思是似乎有，好像有，看来。。。
to be可以省略。
There seems(to be)something wrong about it.
好象有点不大对头。

而It seems...【与引导代词It一起】看来好象..., 后面一般接从句结构。
It seems to me that it will snow.
我看要下雪。
It seems as if it is going to rain.
看来要下雨了.
如果It在这里指具体的某个动物，意思就变成：感到好象, 觉得似乎
It seems (to be) quite scared.
它（可能是猫，狗之类的动物，拟人化）觉得好恐惧。