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题型:阅读理解-阅读单选 难度:0.65 引用次数:354 题号:341042

Karen, grown up in a very traditional family in the western United States, maintained high moral (道德的) standards throughout her youth. In 1984, at the age of 23, she married Bill. They were blessed with two children, a boy and a girl.

By 1991 their love had deepened, and they were happy. Later that year, Bill developed a white spot on his tongue. He visited a doctor.

One day shortly after that, Bill called Karen to sit beside him. He said with tears in his eyes that he loved her and wanted to live forever with her. The doctor suspected that he had been infected with HIV, the virus that leads to AIDS.

The family was tested, Bill and Karen’s results were positive. Bill had become infected before he met Karen then he passed the virus on to Karen. The children’s results were negative. Within three years. Bill was dead, “I don’t know how to express what it is like to watch the once handsome man you love and intend to live with forever dying slowly. I cried many nights. He died three months short of ten years of our marriage,” says Karen. Though a doctor told Karen that she would soon follow her husband into death, she is still alive. The infection has progressed to the early stages of AIDS.

Karen is just one of about 30 million people now living with HIV/AIDS, a figure larger than the combined populations of Australia, Ireland and Paraguay. According to one UN report, Africa has 21 million of these victims. By the turn of the century that number could reach 40 million and the disease will bring on the greatest disaster in human history. Of the world’s sexually active adults aged 15 to 49. 1 in 100 has already been infected with HIV. Of these, only 1 in 10 realizes that he or she is infected. In some parts of Africa, 25 percent of the adults are infected.

Since the beginning of the spread of AIDS in1981, about 11.7 million people have died of it. It is roughly calculated that in 1997 alone, about 2.3 million people died of it. Nevertheless, there are fresh reasons for optimism in the battle against AIDS. During the past few years, there has been a drop in new AIDS cases in wealthy nations. In addition, promising drugs hold out hope of better health and longer life.

1. By telling the story of Karen , the author intends to             .
A.warn people against high risk behaviors
B.stress the importance of medical tests
C.express sympathy for AIDS victims
D.show the consequences of AIDS
2. The underlined part in Paragraph 1 most probably means “           ”.
A.were lucky in having
B.were asked to adopt
C.regretted having
D.gave birth to
3. Bill was suspected of being infected with HIV after           .
A.he got married to Karen
B.the family members were tested
C.Karen persuaded him to see the doctor
D.he found something wrong with his tongue
4. It can be concluded from the passage that           .
A.promising drugs will soon stop AIDS
B.the spread of AIDS could be controlled
C.it is hopeless to win the battle against AIDS
D.the death rate of AIDS patients has been reduced

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阅读理解-阅读单选(约370词) | 适中 (0.65)
文章大意:这是一篇说明文。文章主要介绍了一个可识别心脏病高风险人群的人工智能模型。

【推荐1】Predicting heart attack, and perhaps even preventing the related death, may be possible with the help of artificial intelligence (AI), according to a new paper to be presented at an important meeting next week.

“Heart attack leads to 10% to 20% of overall deaths in the world. Predicting it is difficult. This research may mark a big step toward a novel solution to the global health problem,” says Xavier Jouven, the lead author.

Xavier Jouven and his team examined the medical records of 25, 000 individuals who had experienced heart attack over a period of ten years, and then they employed their AI model, which had been trained on the collected medical records, to compare data from 70, 000 people from the general population, in order to identify individuals at high risk of heart attack.

During the study, they drew 25, 000 personalized health equations (方程式) from the 25, 000 individuals and established a personalized risk profile for all of the 70, 000 general participants, in which the team identified the factors that were most likely to decrease or increase the risk of heart attack at a particular percentage and time frame. For example, the study predicted a certain factor may have an 89% risk of causing heart attack within three months.

According to the paper, the AI model could identify people who had more than 90% risk of suffering heart attack, and they represented around one fourth of all cases of dearth. It also discovered that the risk factors were very different between individuals and were often identified by specialists from different medical fields — a picture that is difficult for a doctor in just one given field to catch.

“While doctors have effective treatments for the identified patients, the use of AI is necessary to detect in a person’s medical information registered over the years to predict the risk of heart attacks,” says Jouven. “We hope that the AI model will help doctors to reduce those risk factors in advance.”

The study comes with several downsides, though. For example, the electronic health records sometimes are not accurate, complete or even available. They may also contain variations in data collection practices among different hospitals.

1. What did the researchers do in their study?
A.They surveyed the participants over a period of ten years.
B.They just studied people who suffered heart attack in the past.
C.They created a detailed risk profile for all of the general participants.
D.They trained the AI model on 95,000 individuals’ existing risk profiles.
2. What can be inferred about the AI model?
A.It may make better predictions than a specialist.
B.It is able to predict about 90%of all cases of death.
C.It is more reliable among the low risk group.
D.It will offer better treatments for the patients.
3. What is the last paragraph mainly about?
A.The significance of the study.
B.Limitations of the new model.
C.Problems with the collected data.
D.The application of the equations.
4. What is the best title for the text?
A.Upcoming Key Meeting to Unveil AI Breakthrough
B.Heart Attack Emerges as Major Global Health Threat
C.AI’s Potential in Heart Attack Prediction & Prevention
D.Electronic Health Records Enhance Heart Attack Predictions
2024-01-10更新 | 45次组卷
阅读理解-阅读单选(约350词) | 适中 (0.65)
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【推荐2】I watched my Dad close the door. It was a really cold night in dead silence and I was all alone at home. My parents left because they had been running fever for several days and they were showing other symptoms of COVID-19. It was the 9th day of Wuhan lockdown (封锁) starting on January 23.

The virus we now know as COVID-19 is somehow frightening partly because it seems that it may infect anyone. But that is only partly true. All the proof suggests that it can be cruel to older people, so I was wondering whether my parents would make it and whether we would ever take family photos, which my parents and I had talked about during the Spring Festival holiday.

On their second day away my parents called and asked me how I was. We talked using FaceTime, and the moment I saw mom lying there with an oxygen mask (氧气罩) and my dad could not talk without breathing heavily, I realized that I had to live on my own.

But two weeks later, I had a fever and had to go into quarantine (隔离) and be put under medical observations for 14 days. Fortunately, my illness turned out to be due to a bacterial infections (感染) but not COVID-19.

The doctors and nurses would work a whole day preparing for new patients and seemed extremely sorry for not having everything that was needed. Most of the patients were really understanding, but of course there were those who were not, and complained loudly, but all the doctors and nurses tried their best to deal with it in a calming way. And they are all from other cities like Shanghai and Guangzhou, and some of them are just three or four years older than me.

When the quarantine was over, every patient thanked the workers for what they had done, but the answer they received was exactly the same: “That’s what we’re here for.”

1. When did the author’s parents leave her for the hospital?
A.January 23B.January 30
C.February 1D.January 31
2. Which of the following statements is true?
A.COVID-19 is terrible because all the people will be infected.
B.Whether his parents could survive COVID-19 worried the author greatly.
C.The doctors and nurses didn’t seem extremely sorry for not having everything that was needed.
D.Some patients complained because the doctors didn’t work calmly.
3. From paragraph 4, we know________.
A.The author had a fever and had to stay at home for quarantine.
B.The author was once infected with COVID-19.
C.The author was ill because of bacterial infections.
D.The author went into quarantine for seven days.
4. What may the author think of the medical workers according to the passage?
A.admirableB.outgoing
C.impatientD.grateful
2021-10-27更新 | 92次组卷
阅读理解-阅读单选(约470词) | 适中 (0.65)
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【推荐3】Infectious diseases and associated deaths have reduced, but they remain a significant threat throughout the world. Infectious diseases outbreaks and the fear and panic that accompany them present various economic risks.

First, there are costs to the health system, both public and private, of medical treatment of the infected and of outbreak control. Concern over the spread of a relatively contained outbreak can lead to decreased trade. Travel and tourism to regions affected by outbreaks are also likely to decline. Some long-running outbreaks, such as HIV, prevent foreign direct investment.

The economic risks are large. It is estimated that the expected yearly cost of infectious diseases is at roughly $500 billion. Even when the health impact of an outbreak is relatively limited, its economic consequences can quickly become expanded. Liberia, for example, saw GDP growth decline 8 percentages from 2013 to 2014 during the Ebola outbreak in Africa.

The risk is complex, but policymakers have tools in response.

Investing in improved health care, supply of clean water, and better health systems can reduce the frequency of human contact with viruses. Investment in reliable disease monitoring in both human and animal populations is also critical. Within formal global watch systems, instead of discouraging reporting possible outbreaks, it may be beneficial to develop incentives for reporting suspected cases, as countries may reasonably fear the effects of such reporting on trade, tourism, and other economic outcomes. Informal monitoring systems, social media for example, which collect information from official reports, media reports, online discussions, and eyewitness observations, can also help national health systems and international responders get ahead of the outbreak news during the early stages. Cooperations for monitoring infectious diseases readiness at the national level provide information national governments can use to react timely to their outbreaks.

There is a significant market failure when it comes to vaccines (疫苗) against individual low-probability viruses that collectively are likely to cause panic. Given the low probability that any single vaccine of this type will be needed, high Research and Development (R&D) costs, and delayed returns, medical companies hesitate to invest in their development. However, responsible international corporations such as CFPI can overcome this market failure. Its goals include advancing candidate vaccines against specific low-probability, high-severity viruses through proof of concept to enable rapid clinical testing in the event of outbreaks. It also aims to fund development of institutional and technical platforms to speed R&D in response to outbreaks for which there are no vaccines.

Undoubtedly, humans and infectious viruses will coexist. However, we can take effective measures to manage the risk of the diseases. Joint action now at the local, national, and multinational levels can go a long way toward protecting our collective well-being in the future.

1. What does the underlined word ''incentives'' in Paragraph 5 probably mean?
A.Habits.B.Opinions.
C.Arguments.D.Rewards.
2. CFPI is a special company which
A.is able to predict the trend of the market
B.develops vaccines against infectious viruses
C.makes huge profits by selling general medicine
D.employs staff who graduate from famous universities
3. What does the passage imply?
A.More importance should be attached to health care systems.
B.All-level cooperations are required to handle infectious diseases.
C.It will not be long before mankind thoroughly defeats the viruses.
D.Technologies hold the key to the settlement of medical problems.
4. Which of the following would be the best title for the passage?
A.Health Risks and Research of Infectious Diseases
B.Global Cooperation and Spread of Infectious Diseases
C.Economic Impact and Solutions of Infectious Diseases
D.Medical Service and Development of Infectious Diseases
2020-06-04更新 | 170次组卷
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