雅思A类小作文范文赏析.docx

The chart below gives information about global sales of games software, CDs and DVD or video.Write a report for a university lecturer describing the information. You should write at least 150 words. You should spend about 20 minutes on this task. model answer: The chart shows the changes in the sales of video material / DVDs, games software and CDs around the world in billions of dollars over a three-year period. It can be seen that the sales of videos / DVDs and games software have increased, while the sales of CDs have gone down slightly.Between 2000 and 2003, the sale of videos and DVDs rose by approximately 13 billion dollars. In 2000, just under 20 billion dollars worth of these items were sold, but in 2003, this figure had risen to a little over 30 billion dollars.The sales of games software also rose during this period, but less sharply. Sales increased from about 13 billion dollars in 2000 to just under 20 billion dollars three years later. By contrast, during the same time period, the sale of CDs fell from 35 billion dollars in 2000 to about 32.5 billion dollars in 2003. ? Eating sweet foods produces acid in the mouth, which can cause tooth decay. (High acid levels are measured by low pH values)Describe the information below and discuss the implications for dental health. You should write at least 150 words. Allow yourself 20 minutes for this task. model answer: Anyone who has visited a dentist has been told that eating excessive amounts of sweets risks harming the teeth. This is because sweets lower pH levels in the mouth to dangerous levels.When the pH level in the mouth is kept above 5.5, acidity is such that teeth are unlikely to be in danger of decay. Sweet foods, however, cause pH in the mouth to drop for a time, and the longer pH levels remain below 5.5, the greater the opportunity for decay to occur.By comparing fruit sugar, cane sugar and honey, which are all common ingredients of sweet foods, we find that cane sugar lowers pH levels for