1 . Seldom are the superstitious practices recorded ______ present practical theories ______ modern psychology relates.

A．which, to which

B．that, which

C．what, to which

D．/,/

2 . I’ve got an English penfriend, ________ I often turn for advice when I meet difficulties in my study.

A．to whom

B．for which

C．with whom

D．around which

3 . 我终于达到可以用这门外语来思考的阶段了。
I had finally come to a place ________ ________ I could think in this foreign language.