2014年12月英语六级仔细阅读答案一

56. D) They are major contributors to environmental problems.

57. C) The desire to generate profits.

58. C) They believe building such a system is too costly.

59. A) It helps businesses to save and gain at the same time.

60. B) They do much better than their counterparts in terms of revenues.

2014年12月英语四级答案汇总

大学英语四级考试