一辆卡车在丘陵地带匀速率行驶,地形如图所示,由于轮胎太旧,途中容易爆胎,爆胎可能性最大的地段应是( )
A:a处
B:b处
C:c处
D:d处
Our coach is pleased _____ we are playing better as a team now.