what is in a B?

I am a little disturbed today. I might be looking down the barrel of my first B grade in school. I made it a personal goal that I would get through college with a 4.0 gpa. At first I thought, "Oh well if I don't, but I will definitely try." After about 14 classes I still have a strong hold on that goal. Now I am starting to wonder how this one will end. I have this oral communication class that seemed straight forward. The teacher has my attention, I am making effort. I do a couple of speeches and I receive B's. The first speech admittedly was worth every bit of that B. The most recent speech I felt would garner at least a low A. I prepped, I focused, I knew my subject and thesis. I was conscience of my um's and er's. I got a B for my troubles. I have one test and one speech left to complete before the class ends. I will do my part, I am just not sure how it will end up. Honestly, I think the teacher has it out for me. I did far better on this speech than the last, yet I only attain a 5 point improvement. I would understand if I felt I did B grade work, I just don't interpret it the same way—unfortunately, that does not matter.