A:provides; for
B:offers; to
C:provides; with
一名运动员在百米赛跑中,测得他在7s末的速度为9m/s,10s末到达终点的速度为10.2m/s,则他在全程内的平均速度是( )
I would r____ tell him about it myself than let him find out from other people.