阅读理解A 33-year-old financial analyst 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 1,200 lessons on You Tube —lessons that appear on an electronic blackboard, which range from 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” four years ago, when he taught a young cousin how to convert 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 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. Now, he thinks short is better. “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.
For Khan, teaching math, science, and finance is just the beginning. He says he’s ready to expand his YouTube site to include other subjects as well1.What gave Khan the idea of teaching math online?A.His success in helping his cousin learn mathB.His discovery that many students found learning math difficultC.A suggestion made to him at a local high schoolD.His interest in Internet teaching2.Why does Khan never go on camera?A.He’s too shy to show his face on cameraB.It’s restricted by YouTube for education videosC.He wants to keep distance from the viewersD.He wants to create a more relaxed learning atmosphere3.From the passage, we know that ________A.Khan travels to many schools to promote his lessonsB.Khan plans to include more subjects in the futureC.Khan gives live math lessons every day for freeD.Khan set up the Khan Academy with his wife4.Why does Bridget Meaney like Khan’s lessons?A.Khan teaches seventh grade math better than her teacherB.The lessons can be watched repeatedly until fully understoodC.She can perfectly follow the pace of Khan’s teachingD.She cannot concentrate when learning in class5.What does Khan mean by “short is better” in the 6th paragraph?A.Keeping the lessons short can ensure better concentrationB.YouTube remends short lessons for its siteC.Short lessons encourage students to return to the websiteD.Students enjoy short mathematics lessons more
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ADBBA解析试题分析：本文讲述了一个33岁的经济学分析师辞去工作而转向无报酬的教学行业，通过自己在优酷网上发布的课程帮助了上百万的学生，同时他也将在未来加入更多的科目到网站上来帮助学生们。
1.细节题。从文章He got the idea for his “Khan Academy” four years ago, when he taught a young cousin how to convert kilograms to grams.可知，他有这个想法是他在四年前帮他的堂弟学数学的时候，故选A
2.细节题。从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 someone at the blackboard, which is distant from you,可知他之所以不用视频摄像的原因是他觉得如果人在黑板的前面，那么会和听众有一种距离感，所以他是为了营造一种轻松的氛围，故选D
3.细节题。从最后He says he’s ready to expand his YouTube site to include other subjects as well.可知，他还想加入更多的学科到他的网站中来，故选B
4.细节题。从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.可知，她之所以喜欢是因为这些课程可以重复的不断的收听，直至完全的理解，故选B
5.细节题。从Education researchers now tell me that 10 minutes is how long someone can have a high level of concentration.可知，之所以保持他的课程很短是因为这样更能使学生们注意力集中。故选A
考点：人物传记类记叙文
点评：人物传记类记叙文比较好理解，本文的文脉清晰，结构也很好把握。对于本文把握好作者所叙述的有关微课程的介绍，作用，同时，此类文章细节题居多，在对文章看懂了的基础上深刻理解作者的写作目的和情感是做好本文的关键。