{{B}}The Robot
Man{{/B}} According to Hans Moravec,universal robots will take over all the physical activities that we engage in,leaving us with little to do. Moravec sees four generations on the road to true universal robots. The first generation will be here by 2010 and will consist of free-ranging robots that can navigate by building an internal mental map of their surroundings. In new situations they’ll be able to adapt, unlike today’s mobile industrial robots. These robots will have the computing power to cope with simple speech and text recognition,and will be used for tasks such as domestic cleaning. The second generation will arrive around 2020 and will be distinguished by the ability to learn. Second generation robots are programmed with sets of primitive tasks and with feedback that pr A. They will be able to learn by themselves B. They will be able to recognize speeches and texts C. They will be able to predict problems D. They will be able to match human reasoning and behaviour 更多"{{B}}第三篇{{/B}} "的相关试题: [单项选择]第三篇
Water
The second most important constituent (构成成份) of the biosphere (生物圈) is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. Life as we know it would only be possible on the surface of a planet which had temperatures somewhere within this narrow range.
The earth’s supply of water probably remains fairly constant in quantity. The total quantity of water is not known very accurately, but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers. Most of it is in the form of the salt water of the oceans about 97 percent. The rest is fresh, but three quarters of this is in the form of ice at the Poles and on mountains, and cannot be used by living systems until melted. Of the remaining fractional which is somewhat less than one per cent of the whole, there is 10—20 times as much stored underground water as t
A. in the center of the earth. B. on the surface of our planet. C. in a very narrow range of temperatures. D. in the coastal areas of the earth. [单项选择]{{B}}第三篇{{/B}}
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