编辑点评: GRE阅读考试的材料,非常强调逻辑的关系,所以逻辑要点是大家在解GRE阅读题的时候的关键,本文就为大家例举了这样一篇逻辑短文,供大家参考和练习。
随着GRE阅读考试的难度日益增加,大家需要有针对性地进行练习,本文为大家例举的就是逻辑短文的练习,文末还附有答案,供大家更好地练习。
The molecules of carbon dioxide in the Earth s atmosphere affect the heat balance of the Earth by acting as a one-way screen. Although these molecules allow radiation at visible wavelengths, where most of 5 the energy of sunlight is concentrated, to pass through, they absorb some of the longer-wavelength, infrared emissions radiated from the Earth s surface, radiation that would otherwise be transmitted back into space. For the Earth to maintain a constant aver age 10 temperature, such emissions from the planet must balance incoming solar radiation. If there were no car-bon dioxide in the atmosphere, heat would escape from the Earth much more easily. The surface temperature would be so much lower that the oceans might be a solid mass 15 of ice.
3. According to the passage, the greatest part of the solar energy that reaches the Earth is
concentrated in the infrared spectrum
concentrated at visible wavelengths
absorbed by carbon dioxide molecules
absorbed by atmospheric water vapor
reflected back to space by snow and ice For the following question, consider each of the choices separately and select all that apply
4. According to the passage, atmospheric carbon dioxide performs which of the following functions
□A absorbing radiation at visible wavelengths
□B absorbing outgoing radiation from the Earth
□C helping to retain heat near the Earth s surface
答案:B/BC
上文的题目大家答对了几题?大家不仅要多做题,更要善于总结,这样才会有针对性地提高。
GRE词汇是GRE考试的基础,只有你在保证基础的情况下,才会取得好成绩,下面就给大家具体介绍记忆GRE词汇的新方法。
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