单项选择题
A．Draw people's attention to the disadvantages of e-books. B．Call on people to reject e-books. C．Criticize schools and business that don't provide e-books. D．Encourage people to use e-books.
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.
A．Positive. B．Indifferent. C．Cautious. D．Suspicious.