北京市著名的科技创新中心，我国第一个国家级高新技术开发区在（　　）

阅读《你的眼泪，我的成人礼》一文，回答下列各题。
                                                                           你的眼泪，我的成人礼
      ①开学三天后，我如愿当上了班长。我在高中时一直做班长，有经验，所以充满自信。
      ②我希望一个班级能有好的团队精神和面貌。当天下午，我走上讲台对大家说：“打扰各位同学几分钟，为了方便大家联系，我决定在班里开通飞信。”
       ③“什么是飞信啊？”前排，一个短头发的女生问。
       ④“就是综合通信服务啊，可以实现互联网和手机间的无缝通信服务……通俗点说吧，就是可以群体使用的短信息，免费的，就像QQ群，我们班先建立起自己的飞信群。”
       ⑤短头发的女生吐吐舌头，有点不好意思，然后半开玩笑地说：“我从小县城来的，消息不灵通。”好多同学笑起来。我也笑了笑说：“如果大家都明白了的话，把手机号报给我……”
       ⑥我的话还没说完，听到有个男生问：“必须要用手机吗？”
       ⑦“当然，不用手机怎么发短信？”我不解地向后看去，问话的，是个皮肤微黑的男生，瘦瘦的，但是眼睛很亮，唇角微微上扬，有点倔强的表情。但是我没想到那个男生忽然站起来说：“我没有手机。”
       ⑧“去买一个啊。”我不假思索地脱口而出。
      ⑨“我是从农村来的，家里穷，家里还有奶奶和妹妹，母亲身体不好，一家人的生活都靠父亲在城里做建筑工。我上大学的学费是父亲借来的，在大学里怎么生活下去，还要靠我自己，所以对不起，虽然我热爱我们的班级，但是班里的飞信群，我不能参加。”说完，那个男生朝外走去。
     ⑩我愣住了，而此刻，全班同学，也都鸦雀无声。那个高高瘦瘦的男生，穿着普通的蓝色运动装，白球鞋，街边小摊的廉价物品，做工粗糙……而裹在这样劣质运动装里的背影，却依然挺拔。
却依然挺拔。
      ⑪许久，我站在那里，感觉心里有一种从未有过的惭愧、自责，甚至有一种失效。
     ⑫第二天，我在教室里挂了一块黑板，我说：“以后有什么消息，我会写在黑板上通知大家，请大家留意！”然后，走到教室后面，走到那个拒绝了我并敢于承认贫穷的男生面前，什么都没有说，只是弯下身，深深地鞠了一躬。
      ⑬教室的某个角落，发出了孤单的掌声，很快，掌声多了起来，连成了片。
      ⑭我抬起头的时候，那个高高的倔强的男生清亮的眼睛里，盈满了泪水。
      ⑮这一天，是我18岁生日，虽然我收到了许多贵重的礼物，但是我知道，这眼泪，才是生活送给我的真正的成人礼。

    People who multitask all the time may be the worst at doing two things at once, a new research suggests. The findings, based on performances and self-evaluation by about 275 college students, indicate that many people multitask not out of a desire to increase productivity, but because they are easily distracted and can't focus on one activity. And “those people turn out to be the worst at handling different things,” said David Sanbonmatsu, a psychologist at the University of Utah.

    Sanbonmatsu and his colleagues gave the students a set of tests and asked them to report how often they multitasked, how good they thought they were at it, and how sensation-seeking (寻求刺激) or imperative (冲动) they were. They then evaluated the participants' multitasking ability with a tricky mental task that required the students to do simple mathematical calculations while remembering a set of letters.

    Not surprisingly, the scientists said, most people thought they were better than average at multitasking, and those who thought they were better at it were more likely to report using a cellphone while driving or viewing multiple kinds of media at once. But those who frequently deal with many things at the same time were found to perform the worst at the actual multitasking test. They also were more likely to admit to sensation-seeking and impulsive behavior, which connects with how easily people get bored and distracted.

     “People multitask not because it's going to lead to greater productivity, but because they're distractible, and they get sucked into things that are not as important.” Sanbonmatsu said.

    Adam Gazzaley, a researcher at the University of California, San Francisco, who was not a member of the research group, said one limitation of the study was that it couldn't find out whether people who start out less focused tend toward multitasking or whether people's recognizing and understanding abilities change as a result of multitasking.

    The findings do suggest, however, why the sensation-seeker who multitask the most may enjoy risky distracted driving. “People who are multitasking are generally less sensitive to risky situations.” said Paul Atchley, another researcher not in the group. “This may partly explain why people go in for these situations even though they're dangerous.”