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题型:阅读理解-阅读单选 难度:0.65 引用次数:99 题号:10469475

Everyone knows that death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two periods—clinical or temporary death and biological death. Clinical death occurs when the important organs, such as the heart or lungs, have stopped to function, but have not suffered permanent damage. The organism (有机体) can still be revived. Biological death occurs when changes in the organism lead to the “breaking up” of important cells and tissues. Death is then unchangeable.

Scientists have been seeking a way to lengthen the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic (麻醉的) sleep. By slowing down the body’s metabolism (新陈代谢), cooling delays the processes leading to biological death.

To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from an artery (动脉). The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing. After two minutes Keta’s heart became active once more. After fifteen minutes, spontaneous (自发的) breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe (注射器) and ran with it around the room. It showed that Keta had nothing different from any other healthy animal.

1. For a person who suffers from the clinical death, _________.
A.he can’t avoid final death
B.he is still very much alive
C.his most important organs are damaged
D.he still has the possibility of getting back to life
2. Scientists try to make the time of clinical death longer in order to ________.
A.cool the organism
B.slow down the body’s metabolism
C.delay the coming of biological death
D.bring important cells and tissues back to active life
3. How did the scientists put Keta into clinical death?
A.By surrounding her body with ice-bags and draining her blood.
B.By lowing her blood pressure and stopping her heart from beating.
C.By putting her to sleep, lowering her temperature and draining her blood.
D.By draining her blood, lowering her blood pressure and stopping her breathing.
4. Which of the following indicates that Keta is a healthy animal after the experiment?
A.Her heart beat again.
B.She seized the syringe and ran away with it.
C.She regained her normal breath.
D.She opened her eyes and lifted her head.

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文章大意:本文是一篇说明文。文章主要介绍了医疗废物的分类以及如何处理医疗废物。

【推荐1】Each year, a large amount of medical waste is produced around the world.     1     But places like medical laboratories and medicine-making companies can also produce large amounts of medical waste.

Medical waste can be divided into several types. One important kind is the infectious (传染性的) medical waste. According to research, a large part of medical waste is infectious. Infectious medical waste includes different items.     2    

Infectious medical waste can cause great harm to both people and the environment.     3     It must be properly managed and contained to avoid spreading infection. Other kinds of medical waste should also be managed and contained properly.


Generally, medical waste should be stored in cool and dark places. The container should be able to prevent air or any liquid from easily getting in or out.     4     Anything that comes in contact with this waste should be considered as medical waste and treated in the same way.

    5     Part of the medical waste produced worldwide is burned. Some of the medical waste is buried underground. And some is directly poured into rivers, lakes and the ocean. All of the approaches are not environmentally friendly. Those in charge of medical waste management are working to develop greener methods of getting rid of medical waste.

A.Many such containers are burned.
B.Most of the medical waste comes from hospitals.
C.There are different ways to remove medical waste.
D.Infectious medical waste damages the air or the water.
E.So infectious medical waste must be treated very carefully.
F.The common ones are thrown-away masks, tools used in operations, etc.
G.And the container must be marked to show the dangerous material inside.
2023-10-13更新 | 42次组卷
阅读理解-阅读单选(约330词) | 适中 (0.65)

【推荐2】A new study suggests that patients with breast cancer who take additional vitamins during chemotherapy(化疗) treatment may face increased risks.

Researchers said the use of dietary supplements(补充剂) that increase levels of antioxidants(抗氧化剂), iron, vitamin B12 and omega-3 fatty acids appeared to lower the effectiveness of chemotherapy. Researchers reported their findings in the Journal of Clinical Oncology.

Christine Ambrosone is the head of cancer prevention and control at the Roswell Park Comprehensive Cancer Center in Buffalo, New York. She said, “From this study and others in the literature, it seems that it may not be wise to take supplements during chemotherapy.”

“It’s thought that antioxidants might interfere with the ability of chemotherapy to kill cancer cells,” Ambrosone said.

Some doctors have been advising patients for a number of years not to take antioxidants during chemotherapy. “But there was no strong empirical data for that recommendation,” Ambrosone said.

So, Ambrosone and other researchers decided to study whether supplement use might affect chemotherapy’s effectiveness. They looked for evidence in an earlier study on diet exercise, lifestyle and cancer results.

In the earlier research, people who took part were asked about their use of supplements at the beginning of and during treatment, and about their lifestyle, diet and exercise. The researchers studied 1,134 patients who filled out the surveys and followed them for a median of six years.

The researchers searched for possibilities that might increase the risk of the disease reappearing or of death. They found that patients who took any supplements at the beginning of and during chemotherapy were 41 percent more likely to have their breast cancer return than those who did not. In addition, the supplement takers were 40 percent more likely to die later on compared to patients using no supplements. The supplements included vitamin A, C and E. Those taking vitamin B12 and iron supplements were at greater risk of cancer returning, the researchers said.

1. Why did Ambrosone and other researchers conduct the study?
A.To know about the patients’ lifestyle.
B.To see whether patients take supplements.
C.To seek evidence for the recommendation.
D.To examine chemotherapy’s effectiveness.
2. What can we know from this passage?
A.Taking vitamins may increase the risk of breast cancer.
B.Ambrosone is the first one to warn patients off taking antioxidants.
C.Antioxidants may increase the ability of chemotherapy to kill cancer cells.
D.Patients may face more dangers if taking supplements during chemotherapy.
3. What section of a newspaper is most likely to have this article?
A.HealthB.Entertainment
C.EducationD.Technology
2021-01-18更新 | 22次组卷
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名校
文章大意:这是一篇记叙文。文章主要讲述了38岁的麦金太尔和丈夫建立了名为RIP医疗债务的组织,来帮助那些无力支付医疗债务的人。

【推荐3】Ms. McIntyre, 38, worked as a publisher. She suffered brain cancer and her health got worse despite some medical treatment. But she realized that in a way, she was luckier than some other people. She had insurance to help pay for her medical care. But Ms. McIntyre and her husband, Mr. Gregory, knew that many people with cancer face tough decisions because of the costs of medical care and wind up owing far more than they can pay.

Though her health was failing, Ms. McIntyre decided to help pay off the medical debts of as many people as she possibly could. The couple began donating money to a group called RIP Medical Debt, which is committed to working to pay off the unpaid medical debts of others. The group can pay off medical bills for about 100 times less money than they cost. In other words, for every 100 donated, the group can pay off 10,000 in unpaid medical bills.

Unfortunately, Ms. McIntyre passed away before long. Mr. Gregory posted a message for Ms. McIntyre on her social media accounts. “If you’re reading this, I have passed away,” the post began. Then the post explained, “To celebrate my life, I’ve arranged to buy up others’ medical debts and then destroy the debts.”

The couple had set up a page on a website to raise money for this purpose. They had hoped to raise about $20,000. Nevertheless, Ms. McIntyre’s last post attracted a lot of attention. The donations on her web page quickly passed the total goal. In less than a week, the site had raised 10 times more than expected and the donations are still coming in. By November 22, 2023, Ms. McIntyre’s web page had raised over $627,000, or enough money to pay off about $60 million in medical debts.

Mr. Gregory planned a special event in December to celebrate Ms. McIntyre’s life and to announce how many millions of dollars of medical debts her efforts had paid for.

1. Why did Ms. McIntyre feel luckier than some other people?
A.The doctors eventually cured her.B.Her disease didn’t become worse.
C.She had a decent job before being ill.D.She had security about medical care.
2. How did Ms. McIntyre and her husband help others?
A.By paying for their daily debts.B.By giving away money to them.
C.By ridding them of debts from treatments.D.By purchasing medical insurance for them.
3. What is paragraph 4 mainly about?
A.The public involvement.B.The couple’s commitment.
C.The operation of a website.D.The increase of medical debts.
4. Which of the following words can best describe Ms. McIntyre?
A.Humorous and elegant.B.Influential and understanding.
C.Cautious and promising.D.Enthusiastic and adaptable.
2024-03-06更新 | 430次组卷
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