8.A 33-year-old physicist in California recently quit his job to devote himself to an unpaid job teaching math on the Internet,and his lessons are reaching almost 100,000 people a month.Salman Khan's voice is heard every day on the net-by tens of thousands of students around the world who are hungry for help learning math.He has posted 1,200lessons an YouTube-lessons that appear on an electronic(電子的)blackboard,which range from(涵括)basic addition to advanced mathematics for science and finance.And they are free.
Khan lives in Silicon Valley,with his wife,a doctor,and their new baby.He got the idea for his"Khan Academy"12 years ago,when he taught a young cousin how to convert(轉(zhuǎn)換)kilograms to grams.With Khan's help,the cousin got good at math,and Khan began a new career.
Now,Khan records his lessons himself,but he never goes on camera."It feels like my voice in their head.You're looking at it and it feels like someone's over your shoulder talking in your ear,as opposed to(與…相反)someone at the blackboard,which is distant from you,"he said.
When Springfield High School in Palo Alto,California invited Khan to speak in person-he immediately connected to the students there.
The idea of short lessons that can be played over and over again attracted high school senior Bridget Meaney.She says she had trouble with math in the seventh grade."I think the teachers are good,but they can't teach at a speed that's perfect for everyone,"she said."I like the idea of learning something in class but then going back and pressing pause or rewind and actually getting a deeper understanding of it."
Originally,Khan kept his lessons short because of YouTube restrictions(限制).Now,he thinks short is better."Education researchers now tell me that 10minutes is how long someone can have a high level of attention.And anything beyond that and your brain switches off,"he said.
For Khan,teaching math,science,and finance is just the beginning.He says he's ready to expand(拓展)his YouTube site to include other subjects as well.
54.What gave Khan the idea of teaching math online?B
A.His interest in Internet teaching.
B.His success in helping his cousin learn math.
C.A suggestion made to him at a local high school.
D.His discovery that many students found learning math difficult.
55.Why does Khan never go on camera?A
A.He wants to create a more relaxed learning atmosphere.
B.He wants to keep distance from the viewers.
C.It's restricted by YouTube for education videos.
D.He's to a shy to show his face on camera.
56.From the passage,we know thatC.
A.Khan travels to many schools to promote his lessons
B.Khan gives live math lessons every day for free
C.Khan plans to include more subjects in the future
D.Khan set up the Khan Academy with his wife
57.What does Khan mean by"short is better"in the 6th paragraph?B
A.Short lessons encourage students to return to the website.
B.Keeping the lessons short can ensure better attention.
C.Students enjoy short mathematics lessons more.
D.YouTube suggests short lessons for its site.
分析 文章主要講述了Khan通過自己錄課想創(chuàng)造一種更輕松的學(xué)習(xí)氛圍以及Khan計劃提供更多科目的教學(xué)錄像.
解答 54.B 細(xì)節(jié)理解.由"He got the idea for his'Khan Academy'four years ago,when he taught a young cousin how to convert(轉(zhuǎn)換)kilograms to grams.With Khan's help,the cousin got good at math,and Khan began a new career."可知,Khan因?yàn)槌晒Φ厥顾闹蹲訉W(xué)好了數(shù)學(xué)而開始了在網(wǎng)上教授數(shù)學(xué)的想法.
55.A 推理判斷.從他所說的話"It feels like my voice in their head.which is distant from you"可知,他自己錄課是想創(chuàng)造一種更輕松的學(xué)習(xí)氛圍.
56.C 推理判斷.由最后He says he's ready to expand his YouTube site to include other subjects as well.可推斷.Khan計劃提供更多科目的教學(xué)錄像.
57.B.句子理解,從其后面的內(nèi)容"Education researchers now tell me that 10 minutes is how long someone can have a high level of concentration.And anything beyond that and your brain switches off,"he said可知,"10分鐘是人的注意力可以最集中的一段時間."
點(diǎn)評 做這類題材閱讀理解時要求考生對文章通讀一遍,做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據(jù).