没有麦当劳,肯德基的汉堡不会这么好吃;没有可口可乐,百事也不会这么壮大;没有狮子,羚羊永远也跑不快。这说明( )
A:竞争能培养进取心并激发其潜能
B:竞争的结果必然是优胜劣汰
C:合作比竞争更有利于事业成功
D:竞争与合作是矛盾的
---Are you going to Tom's birthday party?---_____. I might have to work.
I hear there is _____panda in the zoo, and I want to take _______ bus to see it.