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#雅思写作方法课第五节作业# 感觉作文还是硬伤 归纳能力有待提升
2018-02-07 22:07:58 来自 雅思 4.0 方法课作业
雅思 4.0 方法课作业
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C8 T1:[br]The pie chart shows that there are four main causes of farmland becoming degraded in the world today. Globally, 65% of degradation is caused by too much animal grazing and tree clearance, constituting 35% and 30% respectively. A further 28% of global degradation is due to over-cultivation of crops. Other causes account for only 7% collectively.[br]These causes affected different regions differently in the 1990s, with Europe having as much as 9.8% of degradation due to deforestation, while the impact of this on Oceania and North America was minimal, with the highest overall percentage of land degraded (23%), also suffered from over-cultivation (7.7%) and over-grazing (5.5%). In contrast, Oceania had 13% of degraded farmland and this was mainly due to over-grazing (11.3%). North American had a lower proportion of degraded land at only 5%, and the main causes of this were over-cultivation (3.3%) and, to a lesser extent, over-grazing (1.5%).[br]Overall, it is clear that Europe suffered more from farmland degradation than the other regions, and the main causes there were deforestation and over-cultivations.[br]C8 T2:[br]The charts show how much a UK school spent on different running costs in three separate years: 1981, 1991 and 2001.[br]In all three years, the greatest expenditure was in staff salaries. But while other workser’s salaries saw a fall from 28% in 1981 to only 15% of spending in 2001, teachers’ pay remained the biggest cost, reaching 50% of total spending in 1991 and ending at 45% in 2001.[br]Expenditure on resources such as books had increased to 20% by 1991 before decreasing to only 9% by the end of the period. In contrast, the cost of furniture and equipment saw an opposite trend. This cost decreased to only 5% of total expenditure in 1991 but rose dramatically in 2001 when it represented 23% of the school budget. Similarly, the cost of insurance saw a rising trend, growing from only 2% to 8% by 2001.[br]Overall, teachers’ salaries constituted the largest cost to the school, and while spending increased dramatically for equipment and insurance, there were corresponding drops in expenditure on things such as books and on other workers’ salaries.[br]C6 T3:[br]The first diagram shows that there are four main stages in the life of the silkworm. First of all, eggs are produced by the moth and it takes ten days for each egg to become a silkworm larva that feeds in mulberry leaves. This stage lasts for up to six weeks until the larva produces a cocoon of silk thread around itself. After a period of about three weeks, the adult moths eventually emerge from cocoons and the life cycle begins again.[br]The cocoons are the raw material used for the production of silk cloth. Once selected, they are boiled in water and the threads can be separated in the unwinding stage. Each thread is between 300 and 900 meters long, which means they can be twisted together, dyed and then used to produce cloth in the weaving stage.[br]Overall, the diagrams show that the cocoon stage of the silkworm can be used to produce silk cloth through a very simple process.[br]C5 T2:[br]The first graph shows that there is a gradual decrease in study for career reasons with age. Nearby 80% of students under 26 years, study for their career. This percentage gradually declines by 10-20% every decade. Only 40% of 40-49yr olds and 18% of over 49yr are study for career reasons in late adulthood.[br]Conversely, the first graph also shows that study stemming from interest increase with age. There are only 10% of under 26yr olds studying out of interest. The percentage increases slowly till the beginning of the fourth decade, and increases dramatically in late adulthood. Nearby same number of 40-49yr olds study for career and interest. However 70% of over 49yr olds study for interest in comparison to 18% studying for career reasons in that age group.[br]The second graph shows that employer support is maximum(approximately 60%) for the under 26yr students. It drops rapidly to 32% up to third decade of life, and then increases in late adulthood up to about 44%. It is unclear whether employer support is only for career-focused study, but the highest level is for those students who mainly study for career purposes.