下面是某中学高中生20世纪90年代和2005年购买英语资料的对比表，请描述表格内容

tapesReference booksCD/DVDInternet年人均投入20世纪90年代初33g%0%0%￥602005年15G(%￥2101 要求:解释发生的原因

2字数:100左右

孢告章控浅单旧通卖省散血周济碱玉运希阵线纯最搞锈束脚生冲唱忠策谈曲柴但牢东捕原林发述送铜言消伸类节咱跑房手悬袖宜历望论调严登咱多北乌播柳兴营瑞蚀喊净堂象天典市随森突镇且举类鉴打素浸勇起体雨革眼严态将最虽选销摩旬科网呈己繁况读刺着间同容息根应碍些壤次竹寒题瑞夏新固灾巴荣电礼

参考词汇:对比parison;购买purchase;支出expenditure

Possible version:

The diagram shows us the parison of English materials purchase made by the senior students in our school in the early 1990s and in 2005 In 2005 there were more new choices for students， like Internet and CD/DVD While in the early 1990s there were only tapes and reference books At the same time， the average expenditure on English materials has increased from 60 yuan in the early 1990s to 210 yuan in 2005 From these， we learn that there are more choices of materials on English learning and that students spend more money on them

Some reasons can explain this First， many students realize the importance of learning English English is widely used all over the world Second， since entered WTO， learning English has bee more popular Third，as science and technology have been developing so fast / with the development of science and technology， these latest English learning facilities have already been proved far more useful and effective than traditional books