The math modeling has begun, although the atmosphere at the scene is not very nervous, but if you are busy, you will seem to think about it, but it seems to be a foggy, I don't know what it is. Now I can only use my own perseverance to the most, believe you can, defeat everything with confidence. Very happy, I hope that we can achieve good results, return your own sweat; because of the return of the teacher care, they really have a hard work, for the teacher, we must do our best, complete our topic, I believe pay Finally returns.
The next day may be very critical.
Tired is no longer. . . . . . . . . . . .
