分析 文章讲的是色盲的相关知识.男性中,十个人中会有一个人患有色盲,而女性的概率是二百分之一.色盲有不同的类型,有的分不清红色和绿色,有的无法分辨蓝色和绿色.
解答 24.A 主旨大意题.根据第一段"About ten men in every hundred suffer from color blindness in some way."和二、三段首句"There are different forms of color blindness…Color blindness in human beings is a strange thing"可知大概100个人中有10个分不清有些颜色..因此文章讲的是色盲,故选A.
25.D 细节理解题.根据第三段"things called"cones".These help us to see in a bright light and to tell difference between colors."可知,眼球中的锥体细胞帮助人们看到强光下的物体,还帮助我们分辨颜色,故选D.
26.D 推理判断题.根据第二段"In some cases a man may not be able to see deep red…Sometimes a person cannot tell the difference between blue and green.In few cases an unlucky man may see everything in shades of green"可知,色盲有不同的类型,有的人分不清颜色的深浅,有的人分不清蓝色和绿色,有很少的人会把一切都看成是绿色的.说明不是所有患有色盲的人都有同一种问题,故选D.
27.B 细节理解题.根据最后一段"Mosquitoes prefer blue to yellow."可知,蚊子喜好蓝色的光,因此,我们可以用蓝色的光来灭蚊,故选B.
点评 本文是社会文化类阅读理解.做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.
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