以下内容为2013年12月英语六级阅读答案仔细阅读2第二版, 36 enthusiasm 37 reward 38 determine 39 impact 40 additional 41 closely 42 consistent 43 suspending 44 affect 45 penalty 56. B. Raising children is getting expensive. 57. C. Economic downturn. 58. A. Optimism for the future. 59. D. They don't rely on their children to support them in old age. 60. B. To advise couples to think twice before having children. 61. A) imaginations is the mother of inventions. 62. C) It sounded very much like a dream. 63. A) It may not bring about immediate economic gains. 64. D) Supportive. 65. B) They can be solved sooner or later with human ingenuity.