五、阅读理解。
① We wash vegetables before cooking them. And we wash our hands before we start eating. That is because we know washing can clean our food and keep bad things away. But, do dogs, cows, deer, cats or pigs wash their food? No, they don't.
② However, there are funny animals called raccoons(浣熊). They wash their food before eating. Raccoons don't eat if they can't find water around. Even if they eat, they don't look too happy. Why do raccoons clean food? Do they really have healthy eating habits? The answer is no. They wash food in the water not for cleaning because they also wash the food in the dirty water!
③ In fact, raccoons find most of their food in the dirty water. Raccoons can't see things clearly. They use their front feet just like we use our hands. Water can help their feet feel good, so they can know things better. That's why raccoons usually live near the water. They set up home in the trees near the water.
④ We can see raccoons along streams(小溪) and lakes almost anywhere there is water. They are good swimmers, but they don't swim often. They are good-looking. They are gray or brown, having big ears and small eyes and long tails. They look cute and we love them!
()1. In a(n) class, students can read the passage.
A. music B. art C. biology D. history
()2. Raccoons wash food before eating because they .
A. live in the clean water B. need clean water and food
C. have good eating habits D. know things better with water
()3. What is the structure(结构) of this passage?
A. B. C. D.
()4. The best title for the passage may be “”.
A. What raccoons eat B. Where raccoons live
C. How raccoons wash food D. Why raccoons wash food

1. C 2. D 3. A 4. D

【分析】
本题为阅读理解综合题，需结合原文内容逐一分析各题：
1. 第1题：判断文章所属课程，文章围绕浣熊（动物）展开，属于生物学科内容，据此匹配选项。
2. 第2题：细节理解题，定位原文中浣熊洗食物的原因，找到对应语句匹配选项。
3. 第3题：文章结构题，梳理各段落内容，判断整体结构，匹配对应图示。
4. 第4题：主旨大意题，总结文章核心内容，确定最佳标题。
【解析】
1. 第1题：文章介绍浣熊的相关生物知识，属于生物学范畴，因此在生物课上可阅读该文章，故选C。
2. 第2题：根据原文第三段“Water can help their feet feel good, so they can know things better.”可知，浣熊洗食物是因为水能帮助它们更好地感知事物，对应选项D，其余选项均与原文不符。
3. 第3题：文章为总-分结构：第一段总述动物清洗食物的情况，引出浣熊的特殊行为；第二、三、四段分别从浣熊洗食物的真实原因、生活环境及外形特点等方面展开说明，对应选项A的结构，故选A。
4. 第4题：文章核心围绕浣熊为什么要清洗食物展开，详细解释了浣熊洗食物的真实原因，因此最佳标题为“Why raccoons wash food”，对应选项D。
【答案】
1.C 2.D 3.A 4.D
【知识点】
阅读理解、细节理解、文章结构分析
【点评】
本题考查阅读理解的综合能力，涵盖细节定位、文章结构分析、主旨概括等考点，需学生仔细阅读原文提取关键信息，难度适中。
【难度系数】
0.6