A:b>a>c
B:a>b>c
C:c>b>a
D:a>c>b
小明同学参加“献爱心”活动,买了2元一注的爱心福利彩票5注,则“小明中奖”的事件为 ____事件(填“必然”或“不可能”或“随机”).
________himself in work makes it possible for him to achieve his goal.