四級作文題：
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 on the chart and the outline given below:
1.上圖所示為某校大學(xué)生平均每周使用計(jì)算機(jī)的時(shí)間: 1990年(2 hours)、1995年(4 hours)、2002年(14 hours)，請描述其變化；
2. 請說明發(fā)生這些變化的原因(可從計(jì)算機(jī)的用途、價(jià)格或社會(huì)發(fā)展等方面加以說明)；
3. 你認(rèn)為目前大學(xué)生在計(jì)算機(jī)使用中有什么困難或問題。
Student Use of Computers
范文：
Students tend to use computers more and more nowadays. Reading this chart, we can find that the average number of hours a student spends on the computer per week has increased sharply. In 1990, it was less than 2 hours; and in 1995, it increased to almost 4 hours; while in 2000, the number soared to 20 hours.
Obviously computers are becoming more and more popular. There are several reasons for this. First, computers facilitate us in more aspects of life. Also, the fast development of the Internet enlarges our demands for using computers. We can easily contact with friends in remote places through the Internet. Besides, the prices of computers are getting lower and lower, which enables more students to purchase them.
Along with the time spent on computers, there arise some problems. The most serious one is that many students are spending so much time playing PC games so that they ignore their studies. It is urgent to let the students use computers in a proper way.
