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题型:阅读理解-阅读单选 难度:0.65 引用次数:169 题号:11381486

The world’s biggest COVID9-9 vaccine (疫苗) study started on Monday. A total of 30,00 volunteers will help test the effectiveness and safety of a shot developed by the National Institutes of Health and drug maker Moderna.

The volunteers will each receive two doses (剂量) of a shot. They will not know whether they are getting the real vaccine or false version (版本) Scientists will then closely follow the volunteers as they go about their daily activities. They want to see which group experiences a higher rate of infections (感染), especially in areas where the virus still is spreading unchecked.

Volunteers from more than 80 test areas across the country will take part in the study. Moderna said the first vaccines were given Monday morning in Savannah, Georgia. The U.S. government requires its tests of any vaccine that might be used in the country. The aim is not just to test if a vaccine works, but also to check if it is safe.

Through the government-funded COVID-19 Prevention Network, the U.S. plans a new study for vaccine candidates (候选人) each month through autumn. Each will involve30,000 newly chosen volunteers. The hope is that, by using the same rules for each study, scientists will be easily able to compare the vaccines. In August, the U.S. will carry out its final stages of Oxford University’s vaccine candidate. The study of Johnson & Johnson’s vaccine will start in September. Drug maker Pfizer also plans to carry out its own 30,000-person study this summer.

That is a lot of volunteers needed to test possible vaccines. But in recent weeks, more than 150,000 Americans have registered to volunteer for the studies, says Dr. Larry Corey. He is with the Fred Hutchinson Cancer Research Institute in Seattle, Washington. It normally takes years to create a new vaccine from start to finish. But this time, scientists are setting speed records.

1. What can be learned according to the second paragraph?
A.The volunteers will be divided into two groups.
B.A false version will influence the volunteers poorly.
C.Every volunteer gets two doses of shot at different times.
D.Scientists will keep the volunteers in a special place.
2. What do you know about the vaccine test?
A.This test involves volunteers from different countries.
B.Some volunteers have been injected with the vaccine.
C.The aim of the test is to see how the vaccine works.
D.The U.S. government intends to do tests nationwide.
3. What can be inferred from the last paragraph?
A.The tests need many more than 150,000 volunteers
B.The vaccines made in a hurry have not potential safety issues.
C.It is hoped that vaccine is the best hope against the virus.
D.It is better to put off using the vaccines on humans.
4. Which of the following is the best title for the passage?
A.COVID-19 Vaccine Starts Test with Volunteers
B.Moderna Are to Develop COVID-19 Vaccine
C.150,000 Registered to Get COVID-19 Vaccine
D.COVID-19 Vaccine Gets Support from U.S. Government
21-22高二上·河南·阶段练习 查看更多[5]

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阅读理解-阅读单选(约390词) | 适中 (0.65)

【推荐1】For years, there has been a prejudice against science among clinical psychologists (临床心理学家). In a two-year analysis to be published in November in Perspectives on Psychological Science, psychologists charge that many clinical psychologists fail to “provide the treatments which are given the strongest evidence of effectiveness” and “give more weight to their personal experiences than to science.” As a result, patients have no guarantee that their “treatment will be informed by science.” Walter Mischel of Columbia University is even crueler in his judgment. “The disconnect between what clinical psychologists do and what science has discovered is an extreme embarrassment,” he told me, and “there is a widening gap between clinical practice and science.”

The “widening” reflects the great progress that psychological research has made in identifying the most effective treatments. Thanks to strict clinical trials, we now know that teaching patients to think about their thoughts in new, healthier ways and to act on those new ways of thinking are effective against depression, panic disorder and other problems, with multiple trials showing that these treatments the tools of psychology bring more lasting benefits than drugs.

You wouldn’t know this if you sought help from a typical clinical psychologist. Although many treatments are effective, relatively few psychologists learn or practice them.

Why in the world not? For one thing, says Baker from the University of Wisconsin, clinical psychologists are “very doubtful about the role of science” and “lack solid science training”. Also, one third of patients get better no matter what treatment (if any) they have, “and psychologists remember these successes, believing, wrongly, that they are the result of the treatment.”

When faced with evidence that treatments they offer are not supported by science, clinical psychologists argue that they know better than some study that works. A 2008 study of 591 psychologists in private practice(诊所) found that they rely more on their own and colleagues’ experience than on science when deciding how to treat a patient. If they keep on this path despite the fact that insurance companies demand evidence-based medicine, warns Mischel, psychology will “discredit itself.”

1. Many clinical psychologists fail to provide the most effective treatments because ________.
A.they are unfamiliar with their patientsB.they believe in science and evidence
C.they rely on their personal experiencesD.they depend on their colleagues’ help
2. The widening gap between clinical practice and science is due to _______.
A.the cruel judgment by Walter Mischel
B.the great progress that has been made in psychological research
C.the fact that most patients get better after being treated
D.the fact that patients prefer to take drugs rather than have other treatments
3. How do clinical psychologists respond when accused that their treatments are not supported by science?
A.They feel embarrassed.B.They doubt their treatments.
C.They are disappointed.D.They try to defend themselves.
4. According to the passage, what is Mischel’s attitude towards psychology?
A.Negative.B.Neutral.C.Indifferent.D.Positive.
2019-02-12更新 | 50次组卷
阅读理解-七选五(约270词) | 适中 (0.65)
文章大意:本文是一篇说明文。文章中作者认为每个人至少要学一些最基本的急救知识,这可能是非常重要的,并且介绍了一些获得急救知识的理由。

【推荐2】Last week when I was reading at home, my younger sister rushed in and told me an old man was lying on the round in front of our building. I immediately took my first-aid kit and ran downstairs. He was suffering a slight heart attack. And I performed CPR on him. Luckily, an ambulance came soon and he was taken to hospital. Later that day I was told by the hospital what I did helped rescue the old man’s life.     1    . However, at the same time I fell a bit sad. There were many people who wanted to help around the old man then. Yet no one performed first aid on him as they hadn’t attended a first-aid course. I think everyone should learn at least some basic first-aid techniques, which can be very important.     2    .

You can gain the knowledge, skills and confidence to act in an emergency. You never know when you might need them — you could be at home, at work, at school or on holiday.     3    , you can act whenever you’re needed.

You can be a resource for your community. For your family, your neighbors or the broader community, having more people with first-aid skills helps build a stronger and more harmonious community.

You can stay safe at work. Illness and injury can happen anywhere, anytime.     4    , and you can also help meet your workplace’s safety requirements.

    5    . The first-hand experience you gain through learning first aid and using your skills could help you decide if you want to pursue a career in the health profession. It also shows your commitment to a career in the health profession when it comes to applying for jobs.

A.I was happy to hear that
B.I received a phone call from the hospital
C.If you have the skills
D.With first-aid knowledge you can create a safe work environment
E.You can take first-aid courses in your community for free
F.Here are my reasons
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2022-02-19更新 | 184次组卷
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【推荐3】Chen Wei, a high school student, was having dinner when he heard someone screaming from another table. A fellow diner, Zhang Tao, was choking on something. He was holding his throat with his face turning red, while his desperate friends were slapping him on the back. Chen wasted no time. He rushed to Zhang’s table at once. With the help of Zhang’s friends, he was able to help Zhang to his feet. Then, standing behind Zhang, Chen did the Heimlich manoeuvre. The food was instantly forced out, and Zhang began to breathe again.

Choking victims usually have only about four minutes before they collapse (崩溃) and sometimes die, leaving no time for an ambulance to arrive. To solve this problem, in 1974, an American doctor, Henry Heimlich, created the Heimlich manoeuvre, saving thousands of lives around the world. Doing the Heimlich manoeuvre is quick, practical, and easy. It is so easy, in fact, that almost anyone can lean how.

If you see someone choking, first call the emergency services. Then, make sure the victim is really choking: A choking person cannot speak. Slapping the victim’s back will often force out the obstruction. If this does not work, you can perform the Heimlich manoeuvre by standing behind him and wrapping your arms around his waist. Make a fist with one hand and place it in the upper part of his stomach. Grabbing your fist with your other hand tightly, push up and into his stomach in one motion. Continue doing this until the obstruction is forced out.

With choking victims, every minute counts. You can’t just sit there and do nothing. Luckily, Chen had learnt how to give first aid in school. Seeing Zhang choking, he remained calm and reacted immediately. Chen later said about the incident, “How could I justify sitting there and doing nothing? We are all humans, and we all have a responsibility to look after one another’s welfare”.

1. What is the Heimlich manoeuvre?
A.An American doctor.B.A choking victim.
C.An emergency situation.D.A first aid method.
2. Why is choking such a serious condition?
A.Millions of people die of it every year.
B.Most of the victims are young children.
C.It is minutes before a victim falls down or dies.
D.There are no effective ways to save victims from it.
3. Which action does the Heimlich manoeuvre NOT include?
A.To make a fist with one hand.
B.To hold the victim’s throat with one hand.
C.To grab your fist with the other hand tightly.
D.To stand behind the victim who is really choking.
4. Which word can describe the quality of Chen Wei?
A.Ambitious.B.Cooperative.
C.Responsible.D.Optimistic.
2022-02-26更新 | 87次组卷
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