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    Half a century ago, Japan built the world's first high-speed rail network—a network that remains the gold standard in train travel today. Currently the country is now helping Texas build its own bullet train, a potential game-changer for transportation in the state.

    When it launched on October 1, 1964, the world's first high-speed rail network was known as the “super-express of dreams.” The first line in Japan's now world-famous shinkansen network was built against all odds, in the face of fierce public opposition, technical difficulties and astronomical costs.

    Half a century ago, the system was far humbler. In 1964, the first track was a 320-mile-long link between Tokyo and Osaka that reduced the trip from six-and-a-half hours (on conventional trains) to three hours and 10 minutes, traveling at a maximum speed of 200 miles per hour. For the first time, workers could get to meetings in one city during the day and be back home drinking a beer in the local pub that night.

    Not only did the train expand mobility profoundly, but also businesses appeared around the major stops as a growing emphasis on productivity swept across Japan. Today, the shinkansen network has 1,487 miles of track, with more set to open in the coming years. It seems that everything the shinkansen touches turns to city, and regions that are off the beaten track, so to speak, benefit greatly from the economic jumpstart brought by the train. New shinkansen lines are often proceeded by aggressive marketing campaigns promoting tourism in those areas, a strategy that seems to work.

    Despite its astronomical costs, it actually has saved more. Today, over 350,000 annual trips transport tens of millions of passengers all over Japan with efficiency—the average delay time is less than a minute. A research report titled 30 Years of High-Speed Railways: Features and Economic and Social Effects of The Shinkansen by Hiroshi Okada, estimates that the economic impact from the shinkansen train network, based on the time saved from faster travel, is approximately ¥500 billion ($4.8 billion USD) per year. Okada stresses that the cultural impact is also significant, a shinkansen offers people living far from urban centers “easy access to concerts, exhibitions, theaters, etc., enabling them to lead fuller lives.”

    Japan has a plan, known as the One-Day Travel Initiative. Its goal: regardless of where you are in Japan, it should only take you three hours to get to the nearest major regional city (Tokyo, Osaka, Nagoya, Sapporo or Fukuoka). The planned impact of this hyper-mobility is to discourage the tide of migration toward urban centers, like Tokyo, and encourage decentralization.

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阅读《智能机器会超越人类吗?》,按要求答题。

    ①智能机器真的有可能超越人类吗?2016年3月15日,围棋“人机大战”第五场,“阿尔法围棋”以四比一的比分击败世界顶尖围棋高手九段李世石,这更激发了人们对人工智能的关注。

    ②的确,如果按照固定的程序进行预算,人脑的确赶不上人工智能。无论是国际象棋还是围棋,都是可以完全程序化的一种运动。如果我们问“阿尔法”一个简单的问题:“你赢了比赛开心吗?”它就不能像人一样笑着回答,因为它并不具备人类的情感,也不具备人脑的灵活性。不能解答任何程序设计范围之外的问题。

    ③现有机器和人最大的区别是什么?是人有智能,而现有机器并不具备真正的智能。严格的讲,智能机器只能执行特定的指令,而人则是处理所有感受到的信息。显然,执行指令与处理信息有着本质的不同。

    ④随着人工智能的不断发展,研究智能机器的专家也要懂得神经科学,以便模拟人脑的神经网络构造来连造仿生智能机器。当然,要建造这样一台仿生机器人的困难程度是难以想象的,因为人脑是世界上已知的最复杂,最神奇的“自动化机器”。人脑拥有1000亿个神经细胞,而每一个神经细胞都有数千个突触和其他神经细胞相连,神经细胞通过这些突触相互交流,一个三四岁的孩子大约有1000万亿个突触,到了成年大概稳定在100万亿个。

    ⑤也就是说。仿生机器人需要拥有1000万亿个可以独立运算的处理器,并具有100万亿个信息中转器。无论是制造原件还是整合这些元件,都是一个似乎难以完成的任务。更为可怕的是这些处理器及信息中转机要制成不同的类型。要完成仿生机器人的制造,需要最先进的纳米技术,才能把每个处理器做的像神经细胞那么小,它还需要最先进的超级计算机,才能完成对仿生机器人各个器件排列顺序的编程。

    ⑥因为世界上并不缺人,缺的是比人类某些性能更先进的机器。因此,科学家认为,未来的仿生机器人并非是要完全模仿人类的所有功能,而是模仿某项功能,这样仅仅需要模仿某个脑区就可以了,这就大大降低了制造难度,并可以强化某些功能,制造一些具有“特异功能”的电脑。(选文有改动)