英语四级命题作文：人脑和电脑
英语四级命题作文：人脑和电脑
The Brain and the Computer
Some recent developments in computer industry make scientists predict that the gap between human beings and the machine will be closed by the year 20000.
To understand the significance of this prediction, let us compare the human brain with existing computers. The brain consumes electrical energy at the rate of 25 watts and occupies volume of one tenth of a cubic foot. The brain houses between 10 billion and 100 billion items of information. Every brain cell is directly connected to many other cells. As a result, the cells in which information is stored can communicate with thousands of other cells. In contrast, the computer consumes 1,000,000 watts of electrical power and occupies hundreds of cubic feet of space. The computer memory is like a cell of pigeonholes, with no thinking capacity and no connections elsewhere.
In a word, the electronic brains can hopelessly succeed in comparison with the human brains. (151 words)
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- 风不鸣条 和风轻拂，树枝不发出声响。比喻社会安定。
- 安分知足 安于本分，对自己所得到的待遇知道满足。
- 白圭之玷 白玉上的一个斑点。比喻人或物大体很好，只是有些小缺点。
- 飞沙走砾 沙：沙土；砾：小石块。沙土飞扬，小石块滚动。形容风势很猛。
- 百思不解 百般思索也无法理解。
- 诽誉在俗 诽：指诽谤；誉：赞扬；俗：风气、习惯。诽谤或赞扬在于当时的风习。后来引申指风气、习惯的作用非常大。
- 分毫不爽 比喻没有丝毫差错。
- 挨肩擦背 形容人多拥挤。
- 飞黄腾达 飞黄：传说中神马名；腾达：上升，引伸为发迹，宦途得意。形容骏马奔腾飞驰。比喻骤然得志，官职升得很快。
- 博闻辩言 博：多。闻：传闻。辩言：巧言。形容道听途说，似是而非的言论。
- 不齿于人 指被人看不起。
- 不打不成相识 指经过交手，彼此了解，结交起来就更投合。
- 不恶而严 并不恶声恶气，但很威严，使人知敬畏。
- 飞蛾投火 象蛾子扑火一样。比喻自找死路、自取灭亡。
- 飞云掣电 掣：闪过。像流云飞和闪电一样。形容非常迅速。
