题目

方程的解为________． 答案：【答案】或【解析】方程移项变形后，利用因式分解法求出答案即可.方程变形得，因式分解得，解得，.故答案为4或2.I was not happy, for I wanted to travel. I wanted to see the world known to me only from books. My dream came  36 . I left my native land and started  37  a journey  38  the Atlantic to the New World. I was young and my mind was full of noble ideas. In the month of January 1853 I arrived in New Orleans. An hour  39  my arrival, I was already walking about the streets of the city, staring with interest at the new  40  around me. But soon my  41  turned to other things. As I walked about the streets I began to understand my own  42  . I had been one of the best students in college. But could I use the dry   43  I had received? I had been taught the classic language. Now, in real life, they seemed useless to me. I   44  that I was  45  man, but mow understood that I really knew nothing. The first six months I spent in New Orleans were a good school for me. I learned more of life   46  I had learned during many years of study at college.  47  the end of those six months I had very little money. After paying  48  my room I had only twenty-five dollars  49  in my pocket. I  50  to write home for more money and wait for  51 . This would  52  many weeks, because there were no Atlantic steamers at the time. I wanted to find a  53 , but my classic education had not  54  me for any kind of useful work. St. Louis seemed to be the best place and I thought I would go there. I had enough money for the passage, though I did not know  55  I would live afterwards.                                                                                                           (     ) 36. A. to itself         B. true            C. to a reality           D. down (     ) 37. A. for                      B. on              C. about                D. to (     ) 38. A. over             B. across           C. from                D. above (     ) 39. A. ago              B. before          C. after                        D. later (     ) 40. A. buildings      B. situation            C. scenes              D. conditions (     ) 41. A. thoughts       B. head           C. ideas                D. memory (     ) 42. A. carelessness   B. mistakes        C. shortcomings        D. uselessness (     ) 43. A. experience    B. knowledge      C. practice             D. skill (     ) 44. A. thought         B. wished         C. had thought          D. had wished (     ) 45. A. a learning     B. an educated     C. an honest            D. a perfect (     ) 46. A. as                 B. than          C. though               D. after (     ) 47. A. In                B. To           C. On                  D. By (     ) 48. A. for                      B. back           C. off                  D. out (     ) 49. A. remained      B. existed        C. staying              D. left (     ) 50. A. used             B. hoped        C. ought               D. had (     ) 51. A. a telegram     B. the bill        C. an answer            D. the note (     ) 52. A. mean             B. wait                 C. spend                D. take (     ) 53. A. place            B. job                  C. way                  D. friend (     ) 54. A. prepared       B. fitted         C. served                D. practiced (     ) 55. A. how                     B. for what       C. however               D. where