以人腦和電腦為題的下半年四級作文范文
Directions: Write a composition entitled The Brain and the Computer. You should write at least 120 words according to the outline given below in Chinese:
有人認(rèn)為預(yù)測電腦的`功能將超過人腦。請就人腦與電腦的區(qū)別寫一 篇作文，你可以從體積、運算速度和結(jié)構(gòu)等方面進(jìn)行對比。
參考范文：
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. Incontrast,jhe^computer^consu;mes_1000,000wwattsofelectricaLpower^and occupieshundredsofcubicJ:eeLofspace.^rhe^computermemoryjisJlike^acell of pigeonholes^withnojhinking^capacityandnoconnectionselsewhere. In a word, thejel^ctronicbrainsjcanjhopelesslysucceedJinjcomgarison with the human brains.
【詞匯表達(dá)亮點】
predict v.預(yù)測，預(yù)言
cubic foot立方尺
gap n.差互巨大
house v.容納
close v.消失，結(jié)束
communicate with ... 與? ?交流，溝通
significance n.重要性 意義
compare ... with ...把 和 in contrast 相比較 進(jìn)行比較
pigeonhole n.分類架
consume v.消耗
in a word總之，簡言之
at the rate of ...以 的速度
in comparison with ... 與? ??比較，同??比較起來
occupy volume of . 占據(jù) 的體積
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