In which aspect have e-book publishers done incorrectly？

Questions are based on the following passage．

For years， high school students have received identical textbooks as their classmates．Even asstudents have different learning styles and abilities， they are force-fed the same materials．"Imagine adigital textbook where because I"m adifferent person and learn differently， my book is different thanyour book，" said Richard Baraniuk， founder of OpenStax．

OpenStax will spend two years developing the personalized books and then test them on Houston-area students．The books will also go through a review and evaluation process similar to traditionaltextbooks．Baranluk expects 60 people to review each book before publication to ensure its quality．The idea is to make learning easier， so students can go on to more successful careers and lives．

Baraniuk isn"t just reproducing physical textbooks on digital devices， a mistake e-book publishers havemade．He"s seriously rethinking that the educational experience should be in a world of digital tools．Todo this means involving individuals with skills traditionally left out of the textbook business．Baraniuk iscurrently hiring cognitive scientists and machine learning experts．Baraniuk wants to use the tactics of Google， Netfllx and Amazon to deliver a personalized experience．These Web services all rely oncomplex algorithms （算法） to automatically adjust their offerings for customers．Just as Netlix recommends different movies based on your preferences and viewing history， a textbook might present materials at a different pace．The textbook——which will be stored on a range of digital devices——will automatically adjust itself thanks to machine learning．As a student learns about a topic， he or she could be interrupted by brief quizzes that evaluate， whether he or she masters the area．Depending on how the student does， the subject could be reinforce~l with more material．Or a teacher could be automatically e-mailed that the student is struggling with a certain concept and could use some one-on-one attention．This personalized learning experience is possible thanks to the wealth of data a digital textbook cantrack．This data can be used to better track students" progress during a course．Parents and teacherscan monitor a student"s development and provide in time more proper assistm ce．With personalizedlearning methods， our students" talents will be better developed．

What do we learn about personalized books? 查看材料

A.Their quality will be ensured since they are developed by OpenStax．

B.They will be examined and judged before being published．

C.They will overlook different learning styles and abilities．

D.They will be much similar to traditional textbooks．

er． 查看材料

irhundreds of millions of money for their children．

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out theirkids‘ well-being．

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or lead their lives wisely．

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advance．

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sue．

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From rags to riches and back again in three generations．

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heir living bythemselves．

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children．

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