For thousands of years, people have used plants to make medicines. They used different parts of the plants —the roots, the leaves, the flowers, and the bark (樹皮). Today, doctors have rediscovered more medicinal (藥用) values of some plants. Let’s look at some examples.

Foxglove is a common plant. People have used 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 Chinese 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) because 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.

1.What can foxglove be used for?

A．Studying plants.

B．Building up the plaque.

C．Treating AIDS and cancer.

D．Preventing heart problems.

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.

3.How many plants are mentioned in the passage?

A．3.               B．4.                C．5.               D．6

4.Which of the following is the best title for the passage?

A．Past and future

B．Plants and medicine

C．Health and illness

D．Scientists and doctors

 

【答案】

1.D

2.C

3.B

4.B

【解析】

試題分析：這篇短文主要講述了一些利用植物防治疾病的知識.

1.根據(jù)短文第二段描述可知,毛地黃主要用來防治心臟病,故選D.

2.聯(lián)系下文the cinchona, can be made into a drug to prevent malaria. 可知這是一種疾病,故選C.

3.根據(jù)短文描述,可知主要提到四種植物,毛地黃,金雞納,艾草和大蒜.故選B.

4.這篇短文主要講述了一些草藥知識,故選B,植物和醫(yī)藥.

考點：關(guān)于草藥知識的說明文閱讀

點評：本文淺顯易懂，層次分明，學(xué)生很容易把握文章中心內(nèi)容。答題中注意帶著問題閱讀短文，一般就能順利找出答題依據(jù)。對于不能直接找到根據(jù)的問題注意聯(lián)系上下文，根據(jù)短文中心總結(jié)出正確答案。

 

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