66. The author implies in the first two paragraphs that printed books ____.

1. are incapable of defending civil society
2. are vulnerable to political catastrophes
3. rarely arouse the sense of permanence
4. often yield to totalitarianism

67. Paragraph 3 mainly displays Franzen's concern about ____.

1. the seriousness of ebooks
2. the prospect of ebooks
3. the death of traditional books
4. the loss of focused-reading ability

68. According to Paragraph 4, the changes in our reading mainly arise from ____.

1. the increase in choices of reading media
2. the demand to process more information
3. the emergence of attention-distracting e-readers
4. the decrease in our reading time

69. The author mentioned the sales of science books in Paragraph 5 to show that ____.

1. most of us are incapable of sustained attention
2. books need to compete for our time
3. we haven't lost the ability to read deeply
4. the web makes us better-informed

70. What would be the best title for the text?

1. The Deprived Attention in E-readers.
2. Smarter Readers in the Digital Age.
3. Mourn the Lost Permanence in Printed Words.
4. Read Deeply as Dickens's Audience Did.

(Reference keys.)