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托福阅读句子简化题：Green Icebergs

2015-08-17 15:44:39来源：网络

　　【托福阅读题型：Green Icebergs句子简化题】托福阅读中句子简化题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之句子简化题

　　托福阅读句子简化题：Green Icebergs

　　【Paragraph 3】One explanation for green icebergs attributes their color to an optical illusion when blue ice is　illuminated by a near-horizon red Sun, but green icebergs stand out among white and blue icebergs under a great　variety of light conditions. Another suggestion is that the color might be related to ice with high levels of metallic　compounds, including copper and iron. Recent expeditions have taken ice samples from green icebergs and ice cores—　vertical, cylindrical ice samples reaching down to great depths—from the glacial ice shelves along the Antarctic　continent. Analyses of these cores and samples provide a different solution to the problem.(Green Icebergs)　

　　Which of the sentences below best expresses the essential information in the highlighted sentence in the　passage? Incorrect choices change the meaning in important ways or leave out essential information.　

　　○One explanation notes that green icebergs stand out among other icebergs under a great variety of light　conditions, but this is attributed to an optical illusion.

　　○One explanation for the color of green icebergs attributes their color to an optical illusion that occurs when the　light from a near-horizon red Sun shines on a blue iceberg.

　　○One explanation for green icebergs attributes their color to a great variety of light conditions, but green icebergs　stand out best among other icebergs when illuminated by a near-horizon red Sun.

　　○One explanation attributes the color of green icebergs to an optical illusion under special light conditions, but　green icebergs appear distinct from other icebergs under a great variety of light conditions.



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