阅读理解。 Most animals only have animals of a different kind for food. But som

题文

阅读理解。

     Most animals only have animals of a different kind for food. But sometimes two kinds of animals come  together in a partnership (伙伴关系) which is good for them. You may have noticed some birds on the  backs of sheep. This is not becau they want a ride, but becau they find easy food in the parasites (寄 生虫) on sheep. The sheep let the birds do so becau they can stop the parasites from troubling them.  So though they can do with it by themlves, they can do better together with each other.     Sometimes an animal has a plant partner. The relationship develops until the two partners cannot do  without each other. This is so in corals (珊瑚) of the a. Inside their bodies they have very small plants,  which act as "cleaners", taking the uless things from the coral and giving oxygen in return. That is what  the animal needs to live. If the plants are killed, or are even kept from receiving light so that they cannot  live as usual, the corals will die.

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答案

1. Good.2. Yes.3. Becau they can eat its parasites.4. They play the role of cleaners.5. They take the uless things from corals and give oxygen in return.3. 4和5小题答案不唯一

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科教类阅读

科普类的阅读：科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。如果是介绍社会现象的文章，要掌握所谈现象的内涵。

答题技巧：1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和   关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。 2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。 3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。