下面文章中有5处需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题。选项中有一项是多余选项。

A．concentration

B．working from the base course

C．sticking to what you achieve

D．aiming high

E．Not putting all your eggs in one basket

F．reasons for failures in business

1．________

　　Many of the leading businessmen of Pittsburgh had a serious responsibility thrust upon them at the initial stage of their career．They were introduced to the broom, and spent the first hours of their business lives sweeping out the office．I notice we have professional sweepers now in offices, and our young men unfortunately miss that useful branch of business education．But if by chance the professional sweeper is absent any morning, the boy who has the genius of the future partner in him will not hesitate to try his hand at the broom．It does not hurt the newest comer to sweep out the office if necessary．I was one of those sweepers myself．

2．________

　　Assuming that you have all obtained employment and are fairly started, my advice to you is to be ambitious．I would think nothing of the young man who does not already see himself the partner or the head of an important firm．Do not rest content for a moment in your thoughts as head clerk, or foreman, or general manager in any concern, no matter how extensive．Say to yourself, “My place is at the top．” Be king in your dreams．

3．________

　　Persistence is the consistent factor in most people who succeed, no matter what they are succeeding at．Yet, in the work place we often seem to forget to persist what we are doing．It's easy to get discouraged when you continually try to achieve something and it doesn't work out．But remember that if you try long enough, hard enough and make adjustments along the way, sooner or later you will get to your goal．

4．________

　　And here is another prime condition of success, the great secret：focus your energy, thought, and capital totally upon the business in which you are engaged．Having begun in one line, resolve to fight it out on that line, to lead in it, adopt every improvement, have the best machinery, and know the most about it．

5．________

　　The companies which fail are those which have scattered their capital, which means that they have scattered their brains also．They have investments in this, or that, or the other, here there, and everywhere．“Don't put all your eggs in one basket．” is all wrong．I tell you to “put all your eggs in one basket, and then watch that basket．” Look round you and take notice, men who do that not often fail．It is easy to watch and carry the one basket．It is trying to carry too many baskets that breaks most eggs in this country．He who carries three baskets must put one on his head, which is easy to fall and trip him up．

　　To summarize what I have said：aim for the highest; never enter a bar room; never speculate; never indorse beyond your surplus cash fund; make the firm's interest yours; put all your eggs in one basket, and watch that basket; for as Emerson says, “no one can cheat you out of ultimate success but yourselves．”