Rate of Oollese Students Who Have Cell Phones(大學生手機擁有率)
1.下圖所示為1999年、2001年、2003年某校大學生手機擁有情況，請描述其變化;
2.請說明發生變化的原因;
3.你認為大學生在使用手機時應註意哪些問題。
[寫作導航]可按照漢語提示安排段落。第一段先指出該表表明變化是增加的趨勢，然後用分析得來的資料，即三個年度大學生手機佔有的百分比來支持主題句;第二段出原因：手機價格降低、通訊服務改善、學生打工有收入等;第三段談問題，如上課時不關機、傳送不健康的信息等，結尾建議要合理使用手機。
[範文]
This chart shows the rapid increase in the rate of students who have cell phones in a university between1999 and 2003. In 1999, only 3 percent of the students had cell phones while in 2001 the rate rose to 18 percent. In 2003, however, the rate soared to 56 percent.
Several factors have attribute to this significant change. The most important is the development of the cell phone industry which has made the cell phone cheap, and the telecommunication industry which provides the users with a better service. Many years ago, for example, it took about several thousand, or even more than ten thousand yuan to buy a cett phone. Now, however, a cett phone of excellent quality costs onty about one thousand yuan. The next important reason is that many students now hold a part time job, which enables them to have more pocket money. They can spend this money on anything they like.
Although cett phones bring college students a tot of benefits, they have atso caused some problems. Some students, for instance, do not turn their cett phones off during classes, as a result, they often interrupt their teachers and classmates during lectures. Other students sometimes use their cett phones for other purposes. They send meaningless or even pornographic messages to make fun. So I would tike to suggest here that students should make better use of their cell phones.