题目

阅读理解When you want to go shopping, you usually think how much money you can spend on new clothes first. Think about the kind of clothes you really need. There are labels(标签）inside all new clothes. The labels can tell you how to look after your clothes.Today many clothes must be dry cleaned(干洗). Dry cleaning is expensive. When you buy new clothes , you should see if they need to be dry cleaned. If you buy clothes that can be washed(能水洗的), you will save money. If you buy clothes that are well-made, you will save money, too. Well-made clothes can last longer. They look go（2004•泉州）如图，拦水坝的横断面是梯形ABCD，坡角α=28°，斜坡AB=9米，求拦水坝的高BE．（精确到0.1米，供选用的数据：sin28°=0.4695，cos28°=0.8829，tan28°=0.5317，cot28°=1.8807）