2002年6月大学英语四级作文题
Directions: For this part, you are allowed thirty minutes to write a composition on the topic Student Use of Computers. You should write at least 120 words, and base your composition in the chart and the outline given below:
1.上图所示为1990年、1995年、2000年某校大学生使用计算机的情况，请描述其变化；
2.请说明发生这些变化的原因（可从计算机的用途、价格或社会发展等方面加以说明）；
3.你认为目前大学生在计算机使用中有什么困难或问题。
Student use of computers
From the chart/diagram given above we can clearly see that there has been an obvious increase/decline/fall in the average number of hours that a college student spends on computers in the last decade of the twentieth century.  In 1990,2020英语四级考试时间 less than two hours were spent on computers. The number doubled in 1995. And in 2000, the average hours increased dramatically to almost 20 hours.
Several reasons account for the rapid change. To begin with, the first and most important reason is the people’s realization of computers’ significance. Now computers have found their way into companies, schools and even homes and have become an essential part of our modern society. Secondly, the drop of the prices als
o contributes to the change. With the development of technology, computers become much cheaper now than ten years ago. More students can afford them, and therefore can use them freely.  Last but not least, computers enable us to handle our affairs effectively; reliable computer applications are crucial to business.
In a word, we can safely conclude that the increase of student use of computers is bound to continue. Computers become very popular among students now, and how to make full use of them has caused much discussion among people.
赠送以下资料
考试知识点技巧大全
一、考试中途应饮葡萄糖水
大脑是记忆的场所，脑中有数亿个神经细胞在不停地进行着繁重的活动,大脑细胞活动需要大量能量。科学研究证实,虽然大脑的重量只占人体重量的2%-3%,但大脑消耗的能量却占食物所产生的总能量的20%,它的能量来源靠葡萄糖氧化过程产生。
据医学文献记载,一个健康的青少年学生30分钟用脑,血糖浓度在120毫克/100毫升,大脑反应快,记忆力强；90分钟用脑，血糖浓度降至80毫克/100毫升，大脑功能尚正常；连续120分钟用脑，血糖浓度降至60毫克/100毫升，大脑反应迟钝，思维能力较差。
我们中考、高考每一科考试时间都在2小时或2小时以上且用脑强度大，这样可引起低血糖并造成大脑疲劳，从而影响大脑的正常发挥，对考试成绩产生重大影响。因此建议考生，在用脑60分钟时，开始补饮25%浓度的葡萄糖水100毫升左右，为一个高效果的考试 加油 。
二、考场记忆“短路”怎么办呢？
对于考生来说，掌握有效的应试技巧比再做题突击更为有效。
1.草稿纸也要逐题顺序写草稿要整洁，草稿纸使用要便于检查。不要在一大张纸上乱写乱画，东写一些，西写一些。打草稿也要像解题一样，一题一题顺着序号往下写。最好在草稿纸题号前注上符号，以确定检查侧重点。为了便于做完试卷后的复查，草稿纸一般可以折成4-8块的小方格， 标注题号以便核查，保留清晰的分析和计算过程。