英語四級寫作:歷年考試精選作文

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:

有人認為預測電腦的功能將超過人腦。請就人腦與電腦的區別寫一 篇作文，你可以從體積、運算速度和結構等方面進行對比。

【經典範文】

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 ofpigeonholes^withnojhinking^capacityandnoconnectionselsewhere.

In a word, thejel^ctronicbrainsjcanjhopelesslysucceedJinjcomgarison with the human brains. (151 words)