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根据一项最新研究，在一场数学测试之前让学生听一会古典音乐，可以帮助学生的成绩提高8～9分。音乐似乎能够使大脑神经兴奋地活......

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Just as human history has been shaped by the rise and fall of successive empires, so the computer industry has, in the few decades of its existence, been dominated by one large company after another. Now, at the dawn of the new era of internet services, Google is widely seen as the heir to the kingdom. As the upstart has matured into a powerful industry giant, the suggestion that Google is the new Microsoft has become commonplace in computing circles.Yet there are some crucial ways in which Google differs from Microsoft. For a start, it is a far more innovative company, and its use of small, flexible teams has so far allowed it to remain innovative even as it has grown. Microsoft, in contrast, has stagnated as a result of its size and dominance. It is least innovative in the markets in which it faces the least competition—operating systems, office software and web browsers.More important, however, are the differences that suggest that Google will not be able to establish an IBM or Microsoft-style lock on the industry. In the PC eras hardware became a commodity and Microsoft established a lucrative monopoly centered on its proprietary operating system, Windows. But in the new era of internet services, open standards predominate, rivals are always just a click away, and there is far less scope for companies to establish a proprietary lick-in.
单项选择题
A． A metropolitan cityB． Seaside beachesC． A mountainous areaD． Beautiful lakes
A． A metropolitan city
B． Seaside beaches
C． A mountainous area
D． Beautiful lakes
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