第二节完形填空（共20小题；每题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从36-55各题所给的四个选项（A、Ｂ、Ｃ和Ｄ）中选出最佳选项。
Living one’s life is really like driving on a highway. First, to make a good driving, the driver must carefully examine the   36   of his car, just as he cares for his health for a good life.   37   he enters into the highway, he must   38   certain rules for his own safety. It also can be said that he must obey certain rules of society when living as a decent (体面的) adult. For example, on the highway, he is   39   to keep a constant (不断的)   40  , which can be compared with his   41   activities through his life. Neither driving nor living must be taken at too   42   a speed nor at too slow a speed. If he drives too   43  , the police will give him a   44  , just as he will be arrested when he breaks the law.   45   too conservatively (保守地), he will be called an out-of-date person   46   the others driving at a(an)   47   speed. When he wants to change his lanes, he must give careful   48   to every direction of his car. It is sometimes dangerous to change the way of life   49   he can be sure of completion (完成,结束) by doing so. He   50   not make any unnecessary changing of lanes which gives him only danger. Finally, he must   51   where he is now by recognizing some  52   appearing now and then. If he takes the wrong way, he must return to the right as soon as he can. But he may thus lose   53   and energy both on the road and in life. On the whole, driving on a highway and living one’s life are both hard work.   54   if he is careful and serious enough,   55   will provide him with much pleasure.

36.                               A. seats                       B. condition                C. petrol    D. passengers 37.     A. Once                   B. While                C. For                        D. Although 38.     A. listen to               B. find                  C. follow                    D. insist on 39.     A. ordered                B. supposed            C. believed                 D. hoped 40.     A. state                    B. speed                 C. mind                      D. level 41.     A. outdoor               B. broken              C. good                      D. continuous 42.     A. large                   B. high                   C. limited                   D. expected 43.     A. speedily               B. slowly                C. hurriedly                D. willingly 44.     A. ticket                   B. lift                     C. chance                   D. hand 45.     A. Acting                 B. Running             C. Getting                  D. Working 46.     A. persuading           B. getting               C. bothering               D. refusing 47.     A. average                B. normal               C. usual                      D. fast 48.     A. notice                  B. attention             C. signs                      D. regards 49.     A. if                        B. when                 C. unless                    D. because 50.     A. dare                    B. need                  C. may                       D. should 51.     A. think                   B. discover             C. prove                     D. seem 52.     A. signs                   B. signals               C. posters                   D. symbols 53.     A. money                 B. luck                   C. time                       D. trust 54.     A. Therefore             B. But                    C. And                       D. Then 55.     A. it                        B. he                      C. they                      D. you