【正确答案】Changes in Customer Base for Waikco Supermarket Between 1999 and 2003
In 1999, the customer base was mainly retired people and families, numbers being 100, 000 and 90,000 customers respectively. Single people made up 85,000 of the total customer base.
In 2001, single people and families remained at 1999 levels, at 85,000 and 90,000 respectively. However, the retired people customers dropped by 15, 000 to 95, 000. 2003 again saw no change in the number of single people , at 85,000. The retired people base dropped by 5,000 to 90,000, but the families group rose by 5,000 to 95,000.
The changes between 1999 and 2003 meant that the combined customer base declined by 5,000 customers.

【答案解析】此标题已经给出，即“the changes in sales (or customer base)between 1999 and 2003．”题中所给的图表清晰表明1999、2001、2003三年中Waikco超市三个群体消费者的人数。所以首先应对照图将1999、2001、2003的每类顾客人数读出。如1999年single people为85000人，families为90000人，retired people为100000人。如此推及2001年及2003年。着手写时，对三个表的描述不能用同一句型，这样的文章会因缺乏可读性变得乏味无比。因此可在描述时通过与其他年份对比而组句，例如：“in 2001, single people and families remained at 1999 levels.”最后一句应该对三张图表作总结，即总消费者人数是怎样的趋势，由图可知，总消费者人数减少5000人。