简答:(@张一鑫老师)
47. Clean technologies like wind and solar(注意首字母大写)
48. Capturing and storing CO2 (注意首字母大写)
49. put it to new use
50. increase their yield of fruits and vegetables
51. the scale of CO2 emissions
深度阅读:(@张一鑫老师)
52. A) Its negative effects have long been neglected.
53. D) Goals with financial rewards have strong motivational power.
54. A) They resorted to unethical practice to meet their sales quota.
55. C) Its conclusion is not based on solid scientific evidence.
56. A) The link between goal-setting and harmful behavior deserves further study.
57. D) Free market plus government intervention.
58. D) Government regulation hinders economic development.
59. D) Effective measures adopted by the government.
60. C) They give up the idea of smaller government and less regulation.
61. D) Excessive borrowing.
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