水质变化
📝 题目
The graph below shows the percentage of river water in UK rivers that was classified as having good chemical quality between 1990 and 2002.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
✍️ 参考范文
The line graph compares the proportion of rivers with good chemical quality across four UK nations (Wales, Northern Ireland, England and Scotland) over the period 1990 to 2002.
Overall, Wales and Northern Ireland consistently had far higher percentages of good-quality rivers than England and Scotland throughout the 12-year period. While the figure for Wales declined after a mid-period peak, Northern Ireland saw a steady rise to become the country with the highest share of high-quality rivers by 2002. Both England and Scotland had lower, more volatile proportions, with England peaking earlier than Scotland.
In 1990, Wales had the highest rate at around 95%, remaining close to this level until 1998 when it reached almost 99% before dropping sharply to 80% by 2002. Northern Ireland started lower at 85%, rising gradually to overtake Wales and hit 100% in 2000, then falling slightly to 95% at the end of the period.
By contrast, England and Scotland had much lower shares. England rose from 45% in 1990 to a peak of 70% in 1996, then plummeted to 30% in 1998 before recovering to 50% in 2002. Scotland, starting at the lowest point of 22%, grew to a peak of 60% in 2000, before ending at 40%.
shows the percentage of river water...between 1990 and 2002改写为compares the proportion of rivers with good chemical quality across four UK nations...over the period 1990 to 2002，准确转述图表内容。