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People have known since ancient times th...

People have known since ancient times that aspirin(阿司匹林) reduces pain and lowers high body temperature. But that is not all the drug can do. In recent years, it has been used in other ways, too. Small amounts may help prevent a stroke or heart attack. One recent study showed that some people who took two aspirin pills a学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯! day had lower rates of colorectal cancer. And, some researchers say aspirin may help patients with colon cancer live longer. So, how did aspirin become so important? The story begins with a willow(柳树).

    2, 000 years ago, the Greek doctor Hippocrates advised his patients to chew on the bark and leaves of the willow. The tree contains a chemical called salicin. In the 1800s, researchers discovered how to make salicylic acid from the chemical. In 1897, a chemist named Felix Hoffmann at Friedrich Bayer and Company in Germany created acetyl salicylic acid. Later, it became the active substance in a medicine that Bayer called aspirin. The "a" came from acetyl. The "spir" came from the spirea plant, which also produces salicin. And the "in" ? That is a common way to end medicine names.

    In 1982, a British scientist shared the Nobel Prize in Medicine in part for discovering how aspirin works. Sir John Vane found that aspirin prevents the body from making the natural substances called prostaglandins. Prostaglandins have several effects on the body. Some cause pain and swelling(肿). Prostaglandins also make the heart, kidneys(肾) and blood vessels work well. So there is a problem. Aspirin works against all prostaglandins, good and bad. It can also harm the inside of the stomach, and sometimes it can cause bleeding.

    But a British study released in 2009 suggested that taking another drug with a small amount of aspirin may help reduce the risk of bleeding. If this proves true, it would help thousands of people who are seeking to prevent life-threatening conditions.

1. The writer wrote this passage to______.

A. tell us the harm of aspirin   

B. help us know aspirin better

C. explain why aspirin is useful   

D. prove that aspirin is a good medicine

2.What do we learn about aspirin from Paragraph 1?

A. It is not used until recent years.

B. Using it for a long time may lead to cancer.

C. It is very dan学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!gerous if it is used in the wrong way,

D. It has gained important new uses in recent years.

3.When was the acetyl salicylic acid created?

A. about 2,000 years ago.               B. In the early 1800s.

C. In the late 1800s                     D. In recent years

4.What is waiting to be solved according to the last paragraph?

A. The bleeding caused by taking aspirin.

B. How to reduce the risk of getting colorectal cancer.

C. How to help patients with colon cancer live longer

D. The problem of low body temperature caused by taking aspirin

 

1.B 2.D 3.C 4.A 【解析】 试题分析:这篇文章主要告诉我们阿司匹林的作用,阿司匹林为什么重要的原因,以及阿司匹林的药理,让我们更了解阿司匹林。 1.推理判断题。这篇文章主要告诉我们阿司匹林的作用,阿司匹林为什么重要的原因,以及阿司匹林的药理,让我们更了解阿司匹林。故选B。 2.推理判断题。根据But that is not all the drug can do. In recent years, it has been used in other ways, too.句意:但这并不是这个药全部的作用。近年来,它也被用于其它方面。由此可知近年来已经有了重要的新用途。故选D。 3.细节理解题。根据In 1897, a chemist named Felix Hoffmann at Friedrich Bayer and Company in Germany created acetyl salicylic acid.句意:1897年,德国Friedrich Bayer and Company的药剂师Hippocrates制造出了acetyl salicylic acid。1897年就是19世纪后期。故选C。 4.细节理解题。It can also harm the inside of the stomach, and sometimes it can cause bleeding.But a British study released in 2009 suggested that taking another drug with a small amount of aspirin may help reduce the risk of bleeding.句意:阿司匹林伤害胃,有时有导致出血。但是2009年发布的英国学术研究表明吃另外一种药加少量的阿司匹林可以有助于降低出血的风险。可知应选A。 考点:科普环保类短文阅读。
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In most languages, a greeting is usually followed by "small talk". Small talk means the little thin学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!gs we talk about at the start of a conversation. In English-speaking countries people often make small talk about the weather: "Nice day, isn't it?" "Terrible weather, isn't it?" But there is something special about small talk. It must be about something which both peo学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!ple have the same opinion about. The purpose of small. talk is to let both people agree on something. This makes meeting people easier and more comfortable. People usually agree about the weather, so it is a safe topic for small talk. But people often disagree about religion or politics so these are not suitable topics for small talk in English. The topics for small talk also depend on where the conversation is taking place. At football matches, people make small talk about the game they are watching: "Great game, isn't it?" At bus-stops, people may comment about the transport system: "The bus service is terrible, isn't it?"

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Tips for avoiding traffic jams:

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    Look for an escape. If it is possible to exit the road safely, do it. Use a GPS unit, and you can change your route mid-trip if needed.

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C. Sound the hom loudly.

D. Drive quickly to keep them out

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A.Energetic    B. Polite    C. Careful    D. Honest

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8.A. anger    B. joy    C. appreciation    D. surprise

9.A. cheap    B. empty    C. useless    D. improper

10.A. from    B. behind    C. over    D. towards

 

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