2. 外语
  3. Books haven’t changed much since Johann Guttenburg invented the printing press in the fifteenth century. The methods for produci

Books haven’t changed much since Johann Guttenburg invented the printing press in the fifteenth century. The methods for produci

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问题      Books haven’t changed much since Johann Guttenburg invented the printing press in the fifteenth century. The methods for producing books are, of course, far more sophisticated, but in the end, a book remains a sequential, static【B1】______ .This type of organization is made-to-order for novels, in which a story is read from page one to the end. The printed page, however, has its【B2】______  for just about any book or document that contains an index, including all varieties of reference books, encyclopedias, "how to" books,【B3】______ , and textbooks.
     Over the next few years, the printed pages of college textbooks will begin their【B4】______ to a technology-based presentation. Nobody knows for sure what the textbook of the future will look like. Most【B5】______ and publishers agree, however, that change is just over the【B6】______ . Perhaps it is time to 【B7】______ on what that technology will look like and what it will bring to the classroom—or possibly the home, the office, the student union, the car…
     The interactive book, or i-book will offer many【B8】______ over traditional books. Static figures will come alive with animation. Motion video will be available to demonstrate, elaborate, or clarify.【B9】______ .The i-book will help readers identify and overcome gaps in understanding. Readers will be able to click on or touch "active words" to display related material. When linked to the Internet,【B10】______ . Margin notes can be written or spoken.【B11】______ .
【B5】
选项
答案educators
解析 空后的and提示所填词与publishers并列作主语，应该是名词。上文中提到了大学教材，与此有关的除了出版商可能还有教育机构。educators意为“教育者”。
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