New medicines and instruments every day to extend life. A. develop B. are being developed C. are developing D. have developed 题目和参考答案——青夏教育精英家教网—

题目内容

New medicines and instruments ______ every day to extend life.

A. develop B. are being developed

C. are developing D. have developed

解析:

因为“新的药物和器械”与“开发”之间为被动关系，故用被动语态。

练习册系列答案

相关题目

Most of the news in the newspapers is bad but sometimes there is a story with good news. This is one of those stories. Millions of people around the world suffer from AIDS, malaria, tuberculosis, and other serious diseases. There are medicines to treat these diseases but for people in poor countries, these medicines are too expensive to buy. When a pharmaceutical（制药的）company produces a new medicine, they receive a special license called a patent. This license means that the new medicine or drug is protected for a period of 20 years. The company that produced the drug can fix the price of the drug and no other company is allowed to produce the same drug or a copy of the drug for 20 years. At the moment, these patents operate all over the world, both in rich countries and in poor countries. The drugs companies say that they need patents so that they can get the money to pay for research to find new drugs and medicines. In rich countries people usually have enough money to pay for these drugs but in poor countries people can’t afford to buy them and cannot treat diseases like AIDS and malaria.

Last month, however, a group of experts published a report which says that patents are very bad for poor countries. The report says that drug companies do not want to find new medicines for diseases of poor people in poor countries. It says that poor countries should be allowed to buy cheap drugs without patents from other countries.

The authors of the report were lawyers, scientists and a senior director from the drug company Pfizer. Of course, the pharmaceuticals industry doesn’t agree with the report, “We need patents so that we can develop new medicines to fight disease both in the developed and developing world,” said a spokesman. But the report is the first sign that there might be a change in the patent system. This change could save millions of lives in the world’s poorest countries. This really is good news.

Why are medicines expensive for people in poor countries?

A. They are protected by patents. B. They are produced in rich countries.

C. They are imported. D. They can cure the deadly diseases.

What does the underlined word “patent” in Para1 mean in Chinese?

A. 执照 B. 专利权 C. 专利品 D. 商标

Why do drugs companies need patents?

A. To sell drugs in rich countries.

B. To sell drugs in poor countries.

C. To get money to produce new drugs.

D. To compete with other companies.

What does the report say?

A. Poor countries should spend more money on drugs.

B. Poor countries shouldn’t obey a pharmaceutical patent.

C. Poor countries should import drugs.

D. Poor countries should be allowed to make copies of drugs.

What might happen if the patent system is changed?

A. Millions of lives will be saved in poor countries.

B. Drugs companies will stop producing drugs.

C. Drug companies will make more money.

D. The competition will be canceled.

　　From the very beginning, Martin felt that he was bound up with（与……紧紧地在一起）his lovely little patient. One day, following some tests , Betty gave the doctor a big hug（拥抱）.

　　A few months later the doctor removed not only the tumour（肿瘤）, but also the entire lower left side of Betty’s gum（牙龈）and jawbone. Because Betty was so young, Martin was hopeful that her jawbone might regenerate.

　　Within three months, Betty’s tumour grew as large as an orange, changing the natural appearance of the left side of her small, delicate （ = thin; not strong）face. Soon she couldn’t even close her mouth, and as her eating problems worsened, Betty ‘s weight dropped from 20 kilos to 15. Martin knew from experience that it might invade the brain.

　　The only other possibility was thorough radiation therapy （放射疗法）. Night after night, Betty's father gave her injection, but the tumour remained as big as ever. Then one evening. Morgan noticed that the tumour had begun to change. It was actually becoming smaller! For two months her tumour appeared to be going away for ever. In the coming months, Betty’s tumour continued to appear. She was able to eat solid food once again. Her jawbone was regenerating. The tumour was gone.

　If Betty’s jawbone didn’t regenerate, the doctors ________ .

　　A. would rebuild her jaw

　　B. would continue the treatment

　　C. would use new medicine

　　D. could do nothing else

　If the brain should be invaded, the result would ________.

　　A. prevent her growth

　　B. reduce her weight

　　C. cause her brain damaged

　　D. affect her eyesight

　What did the doctors do two months later?

　　A. They continued their observations.

　　B. They gave up the operation on Betty.

　　C. They found out what caused Betty’s strange disease.

D. They declared that Betty’s strange disease was cured.

Since ancient times, people have known about its ability to reduce pain and high body temperature. More than 2000 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（柳醇）. From salicin, researchers in the 1800s discovered how to make salicylic acid（酸）. And 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 new medicine that Bayer called aspirin. The "a" came from acetyl. The "spir" came from the spirea plant, which also produces salicin. And the "in" Well, 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 blocks the body from making natural substances called prostaglandins（前列腺素）.Prostaglandins have several effects on the body. Some cause pain and the expansion, or swelling（肿瘤; 膨胀）, of damaged tissue. Others protect the lining of the stomach and small intestine. Prostaglandins also make the heart, kidneys and blood vessels （血管）work well. But there is a problem. Aspirin works against all prostaglandins, good and bad. Scientists learned how aspirin interferes with an enzyme（酶）. One form of this enzyme makes the prostaglandin that causes pain and swelling. Another form of the enzyme creates a protective effect. So aspirin can reduce pain and swelling in damaged tissues. But it can also harm the inside of the stomach and small intestine（肠）.
【小题1】What sickness can the medicine from the willow deal with according to the passage?

【小题2】What can we know about Prostaglandin according to the passage?

A．It results from pain.

B．It prevents the lining of the stomach and small intestine.

C．It causes blood vessels to work wrongly.

D．It is sometimes good but sometimes bad.

【小题3】What can we know about aspirin according to the passage?

A．Aspirin can treat almost diseases.

B．Aspirin can create the protective enzyme.