第19题: [单项选择]The author wrote this passage in order to ______. A. introduce a kind of reading machine B. show the uses of computers C. give advice for blind people D. explain why the machine is important for blind people 参考答案:A 答案解析:[解析] 主旨大意题。第一段讲电脑有许多用途,而The Kurzweil Reading Machine这种电脑有特殊的用途。第二段讲了它的构成。第三段讲了盲人如何使用这种电脑。最后一段讲了盲人喜欢它