As far as the test is concerned, I've feel that taking this last one was a bit harder and more in depth. What you've felt is not unfounded or unexplainable. But what I have found is by doing outside reading on the SOClinks helps me get a well-rounded view; in addition, I've found it helpful to discuss (aggravate) my wife by bringing up some of what is covered.
Perhaps it might be helpful to pick up some of those lost points with extra credit projects, like reviewing a movie or sociologically analyzing a few songs.
By the way, I only got 71% on my MC test, the campus in Cottage Grove was pretty quiet.