Part Ⅱ Reading Comprehension Questions 21 to 25 are based on the following passage:
Electronic books could revolutionize reading, but people ought to consider their far-reaching . “The e-book promises to wreak a slow havoc(浩劫) on life as we know it,” Jason Ohler, professor of technology assessment(评估), university of Alaska Southeast In Juneau, warned the World Future Society, Bethesda, Md. His assessment weighed the pros and cons ( 赞成和反对的理由 ) of e-book technologys impact on social relationships, the environment, the economy, etc. Before you curl up （蜷曲）with an e-book, consider the disadvantages. They increase eyestrain due to poor screen resolution, replace a relatively cheap commodity with a more expensive one, and displace workers in print book production and traditional publishing. E-books make it easy to share data, thereby threatening copyright agreements and reducing compensation of authors, as well as creating nonbiodegradable（不可生物降解）trash. On the other hand, e-books save paper and trees, reduce the burden of the carrying and storing of printed books, promote self-sufficiency in learning, and make reading a collaborative experience online. They also create new jobs for writers and artists and encourage self-publishing. In final analysis, Ohler points out, e-books should gain societys approval if a few conditions are met: make them biodegradable and recyclable, solve the problem of eye fatigue(疲劳), be sure the “have-nots” get the technology, and support e-book training in schools and business. 21. What is the authors purpose of writing the passage? A) Draw peoples attention to the disadvantages of e-books. B) Call on people to reject e-books. C) Criticize schools and business that dont provide e-books. D) Encourage people to use e-books.
22. What is Jason Ohlers attitude towards e-books? A) Positive. B) Indifferent. C) Cautious. D) Suspicious. 23. In what sense do e-books exert a negative impact on the environment? A) They are unable to be broken down into harmless products. B) They consume a lot of natural resources. C) They produce harmful gases. D) They are capable of .
24. What is e-books negative impact on social relationships？ A) They create new jobs only for writers. B) Fewer and fewer people have access to new technology. C) They may threaten some traditional trades. D) They isolate people from one another.
25. What does Ohler suggest regarding the use of e-books? A) The society should ensure the poor have access to the technology. B) The society should ban the use of e-books if they cannot reduce eye fatigue. C) The society should approve of the use of e-books if they are made recyclable. D) The schools should solve the present problems of e-books.
. “The e-book promises to wreak a slow havoc(浩劫) on life as we know it,” Jason Ohler, professor of technology assessment(评估), university of Alaska Southeast In Juneau, warned the World Future Society, Bethesda, Md. His assessment weighed the pros and cons ( 赞成和反对的理由 ) of e-book technologys impact on social relationships, the environment, the economy, etc. Before you curl up （蜷曲）with an e-book, consider the disadvantages. 
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