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  3. Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not matter. They will turn themselve

Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not matter. They will turn themselve

admin2005-06-26  74
问题     Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not matter. They will turn themselves off and on again when you return. You will choose the temperature for each room, the lighting and the humidity. A sensor will detect the presence of a human(and, with luck, ignore the dog!)and turn the systems on, and when the humans leave it will turn them off again.
    The sensors will work through the central computer, and they will do much more than just turn the fires and lights on and off for you. They will detect faulty electrical appliances, plugs or switches, isolate them so that they cannot harm anyone, and then warn you that they need repair. They will detect fire and if you are out of the house, the computer will call the fire brigade. It will also call the police should the sensors detect an intruder. This will not be too difficult because the locks on the outside doors will be electronic. You will open them using your personal card—the one you use for shopping—maybe using a number known only to you.
    It will be impossible to lose the key, and a housebreaker will have to tamper(拨弄)with the lock or with a window. It is not very difficult to make such tampering send a signal to the computer.
    The computer will be more than a fireman-policeman-servant. It will be an entertainer, and most of your entertainment will come right into your home. It does now, of course, but by 2040 "entertainment" will mean much more. For one thing, you will be able to take part actively, rather than just watching.
Thanks to computers, in 2040 people______.
选项 A、will have no entertainment outside
B、will replace TV with computers
C、will be controlled by computers
D、will have more fun at home
答案D
解析 文章最后一段提到， “It will be an entertainer，and most of your entertainment will come right into your home．”它还将提供娱乐，你的大部分娱乐活动将直接进入你的家庭。可见，更多的娱乐活动将在家里进行，D项的内容与之相符。文中只是说更多的娱乐活动将在家中进行，但并没有提到不在外面进行娱乐活动。所以A项不对。B项的内容文中没有提到。第二段中只是说传感器通过中央电脑进行工作，不能由此推出以后人们将由电脑控制。所以C项也不对。因此本题的正确答案为D。
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