With the development of modern technology， digital devices（数码设备） have been seen everywhere． People often check what is （1）h　　 in the world on the Internet， keep in touch with friends through emails， or even start to read e﹣books． （2）H　　， many people still prefer paper books to e﹣books because they think that brains work （3）b　　 when reading paper books．

    Now， some scientists have come up with some （4）d　　 ideas． They believe how brains work is not greatly affected by the way people read， but depends on the following factors（因素）． They （5）i　　 the type and content of reading materials， the （6）p　　 of reading． etc． When people read for entertainment， like news about star families or （7）f　　 stories， reading paper books or e﹣books makes no difference． When people read to gain （8）k　　 about science， reading paper books is more helpful． Brains need longer to deal with harder problems． Usually， taking notes by （9）h　　 on paper books takes longer than typing（打字） notes out on digital devices． So it's （10）e　　for you to remember key points when you read paper books． Next time， when you read e﹣books about science， just remember to slow down and give your brain more time．