For thousands of years, people have ud plants to make medicines. They ud dif

题文

For thousands of years, people have ud plants to make medicines. They ud different parts of the plants —the roots, the leaves, the flowers, and the bark (树皮). Today, doctors have rediscovered more medicinal (药用) values of some plants. Let’s look at some examples. Foxglove is a common plant. People have ud it to make the heart slow down. Recently scientists have developed another drug from it. This new drug helps prevent other heart problems. In some areas, malaria has been a problem. Scientists have learned that the bark of a South American tree, the cinchona, can be made into a drug to prevent malaria. For a long time, the Chine have known that a special plant, wormwood, can also fight malaria. Scientists have been working with it to develop new drugs against malaria. In Germany, some scientists studied garlic (大蒜) for four years. They found that it helps prevent the build-up of plaque (血小板) becau too much plaque is bad for health. This very common plant continues to be studied.As we know, there are about 250,000 kinds of flowering plants in the world. Scientists have only studied little more than one percent of plants for their medicinal value. Maybe medicines for AIDS and cancer will be made from the other 99 percent.小题1:What can foxglove be ud for?A．Studying plants.B．Building up the plaque.C．Treating AIDS and cancer.D．Preventing heart problems.小题2:What does the underlined word “malaria” in Paragraph 3 refer to (指的是)?A．A drug.B．A plant.C．An illness.D．An animal.小题3:How many plants are mentioned in the passage?A．3.B．4.C．5.D．6小题4:Which of the following is the best title for the passage?A．Past and futureB．Plants and medicineC．Health and illnessD．Scientists and doctors

题型：未知 难度：其他题型

答案

小题1:D小题2:C小题3:B小题4:B

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解析

这篇短文主要讲述了一些利用植物防治疾病的知识.小题1:根据短文第二段描述可知,毛地黄主要用来防治心脏病,故选D.小题2:联系下文the cinchona, can be made into a drug to prevent malaria. 可知这是一种疾病,故选C.小题3:根据短文描述,可知主要提到四种植物,毛地黄,金鸡纳,艾草和大蒜.故选B.小题4:这篇短文主要讲述了一些草药知识,故选B,植物和医药.点评：本文浅显易懂，层次分明，学生很容易把握文章中心内容。答题中注意带着问题阅读短文，一般就能顺利找出答题依据。对于不能直接找到根据的问题注意联系上下文，根据短文中心总结出正确答案。

考点

据考高分专家说，试题“For thousands of yea.....”主要考查你对 [科教类阅读 ]考点的理解。

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。