Describe a subject that you studied that you thought was interesting.
You should say:
what the subject was
what your teacher was like
how long you studied this subject
and explain why you thought it was interesting.
雅思口语part2高分话题范文参考：
an interesting subject
Ok then, well the subject I’d like to talk about is Economics, because it was one of the few classes that I actually enjoyed, and this was in no small part due to the fact that we had a really great teacher for it.，