题目内容
2.For those who have no access to clean water,the phrase"a thirst for knowledge"may soon have a new meaning.Researchers have developed a book with specially treated pages that can make water safe to drink.The researchers say their invention could improve the lives of many in the developing world.An estimated 600 to 700 million people around the world are at risk of disease or even death because their drinking water is not clean.The water is infected with harmful bacteria or other pollutants.But researcher Teri Dankovich has developed a special book that could turn dirty water into clean,drinkable water.The book contains 25 pages.Each page is about one millimeter thick.The pages contain very small particles (微粒) of silver.The pages can be used as filters (过滤器) to remove harmful microorganisms that can pollute drinking water.The filter kills the organisms that pass through it.Ms.Dankovich says each page can treat up to 100 liters of water.Pictures on the pages show the dangers of dirty water and how to use the book for those unable to read.The pages are made of filter paper.They are designed to be torn from the book.Water can be poured through the paper to be decontaminated.
Teri Dankovich and another researcher tested the drinkable book in Bangladesh,Ghana and South Africa.The tests proved to be successful.At the meeting of the American Chemical Society in Boston,Ms.Dankovich was asked whether she has considered adding classic literature on the book's pages."The idea of classical texts-that's of interest maybe later.But we have discussed a little bit more exciting text.But we really haven't had the time to go through that part,"she laughed.
Water for Life,a non-governmental organization,has provided financial support for the project.It costs just pennies per page to produce each book.
28.How does the book help people get clean water?A
A.The tiny metal particles on the pages remove the pollution.
B.Its pages can produce small particles when dropped into water.
C.It contains knowledge of water cleaning on each of the pages.
D.It carries information about the harm caused by dirty water.
29.The underlined word"decontaminated"in Paragraph 2 probably meanD.
A.tested B.boiled C.absorbed D.cleaned
30.What can we infer about the drinkable book with classical texts?D
A.It will be available soon.
B.It's a joke to the researchers.
C.It's a waste of time to do research on them.
D.It has not been on the researchers'schedule.
31.What is the passage mainly about?A
A.Book pages providing safe drinking water.
B.Water pollution in developing countries.
C.Books designed to improve people's lives.
D.A new test carried out successfully.
分析 本文是一篇人物故事类阅读,属于说明文,对于那些无法获得干净的水,这个短语"求知欲"可能很快就会有一个新的意思,研究者已经开发出一本书,页面可以过滤,提供安全的饮用水,研究人员说他们的发明可以挽救发展中国家的许多人的生命.
解答 28.答案:A.细节理解题.根据The book contains 25 pages.Each page is about one millimeter thick.The pages contain very small particles (微粒) of silver.The pages can be used as filters (过滤器) to remove harmful microorganisms that can pollute drinking water.The filter kills the organisms that pass through it.可知,通过书中页面上的金属微粒去除污染.故选A.
29.答案:D.词义猜测题.根据上下文内容可知,Water can be poured through the paper to be decontaminated.句意为水可以通过纸张被净化.故该词意为净化.故选D.
30.答案:D.细节理解题.根据But we really haven't had the time to go through that part可知,研究者还没有规划这部分时间.故选D.
31.答案:A.主旨大意题.文章给我们介绍了一种能过滤水中有害物质的书,通过书页过滤然后给我们提供安全地饮用水.故选A.
点评 本文是一篇人物故事类阅读,题目涉及多道细节理解题,词义猜测题,主旨大意题.做题时学生应仔细阅读原文,把握文章主要内容,联系文章上下文内容并结合所给选项含义,从中选出正确答案,一定要做到有理有据,切忌胡乱猜测.