2014年12月英語六級仔細(xì)閱讀答案一（滬江網(wǎng)校版）
來源：滬江英語
2014-12-20 19:56
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.
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