John and Bobby joined a company together just after graduation from college the same year．Both worked very hard．After several years，however，the boss promoted （提升） Bobby to the position of manager but John couldn't stand it anymore，handed in his resignation（辞呈） to the boss and complained that the boss didn't how to work and did not value hard working clerk，but only promoted those who said good words to him．
The boss knew John worked very hard for the years．He thought for a moment and said，"Thank you for your honesty，but I have a request． （我希望在你离开之前再为我们公司做件事） Perhaps you'll change your mind and take back your resignation．"
John agreed．The boss asked him to go and find out anyone selling watermelon on the market．John went and returned soon．He said he had found out a man selling watermelon．The boss asked how much per kg？John shook his head and went back to the market to ask and returned to tell the boss1.2perkg．BosstoldJohntowaitasecond，andhecalledBobbytocometohisoffice．HeaskedBobbytogoandfindanyonesellingwatermelononthemarket．Bobbywent，returnedandsaid，"Boss，onlyonepersonsellingwatermelon.1.2per kg，and $ 10for 10kg．He has 340melons in all，58of which are on the table．Every melon weights about 2kg．Bought from the South two days ago，they're fresh and red，good quality．"
John was very surprised and realized the difference between himself and Bobby．He decided not to resign but to learn from Bobby．
My dear friends，a more successful person is more observant and thinks more．Chances are in the daily details．For the same matter，②②asuccessfulpersonseesmoreandfarthersothathisdreamcancometrueeasily．．If a person sees one year ahead，while another sees only tomorrow and the difference between a year and a day is 365times，how could you win？
71．Who was promoted to the position of manager？___．
72．Did John work more carefully than Bobby？___．
73．Why did John decide not to leave at last？___．
74．