完形填空（共20小题；每小题1．5分，满分30分） 阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项。 After graduation from college, I started to sell. Soon I discovered that the  36  expression I had been wearing since childhood meant sure  37 ．I knew it wasn’t going to be easy to   38  that expression on my face left by so many years of hardship. It   39   a complete change in  my view on life. Here is the   40  I tried． Each morning during a fifteen－minute bath, I  41  to cultivate（培养）a big, happy  smile. I found out,   42  , that it couldn’t be a forced smile  43  just for the purpose of putting dollars in my   44 . It had to be an honest－to－goodness smile from down deep   45 ，an outward expression of happiness from within! Let’s see  46  starting with a good fifteen－minute workout of the smile muscles    47    me during the day. Before entering an office I  48   think of the many things I had to be  49  for, work up a big smile and then enter. Seldom did it fail to get the same smile    50   from  the person I met. I also found that it   51  people when passed them on the street to give them  a   52   smile． Give every living soul you meet the best smile you have    53   smiled in your life, and  see how much better you  54   and look. It’s one of the best ways I know to  55   worrying，and start living. When I began doing this, I found I became more welcome everywhere. 36．A．happy        B．worried          C．curious             D．surprised 37．A．success      B．friendship         C．failure              D．wealth 38．A．wear         B．show            C．change           D．see 39．A．made up       B．brought in          C．turned over          D．called for 40．A．way         B．example          C．idea                D．thought 41．A．determined    B．hurried           C．failed               D．pretended 42．A．therefore      B．however           C．instead            D．otherwise 43．A．introduced     B．developed        C．discovered          D．left 44．A．opinion       B．honor             C．bill                 D．pocket 45．A．outside       B．upward           C．inside              D．forward 46．A．when        B．how              C．whether             D．why 47．A．helped       B．upset            C．satisfied          D．disappointed 48．A．could        B．might             C．should             D．would 49．A．ready        B．eager            C．thankful            D．famous 50．A．in general     B．in public              C．in return          D．in advance 51．A．greeted      B．pleased          C．puzzled           D．welcomed 52．A．cheerful      B．forced            C．strange           D．bitter 53．A．never        B．just              C．already            D．ever 54．A．prove         B．appear                    C．feel               D．remain 55．A．keep         B．stop             C．hate              D．protect