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题型:阅读理解-阅读单选 难度:0.65 引用次数:63 题号:22858519

We breathe, eat and drink tiny particles of plastic. But are these in the body harmless. dangerous or somewhere in between? A small study published on Wednesday in the New England Journal of Medicine raises more questions than it answers about how these hits might affect the heart.

The study involved 257 people who had surgery to clear blocked blood vessels in their necks. Using two methods, researchers found evidence of plastics-mostly invisible nanoplastics — in 150 patients and no evidence of plastics in 107 patients. They followed these people for three years. During that time, 30 or 20% of those with plastics had a heart attack, stroke or died from any cause, compared to 8 or about 8% of those with no evidence of plastics.

The researchers also found more evidence of inflammation (炎症) in the people with the plastic bits in their blood vessels. Inflammation is the body’s response to injury and is thought to raise the risk of heart attacks and stroke.

“I hope that the alarming message will raise the consciousness of citizens, especially governments, to finally become aware of the importance of the health of our planet.” said Dr. Raffaele Marfella of the University of Campania in Italy.

Nevertheless, the study was very small and looked only at people with narrowed arteries (动脉), who were already at risk for heart attack and stroke. The patients with the plastics had more heart disease, diabetes and high cholesterol (胆固醇) than the patients without plastics. They were more likely to be men and more likely to be smokers. The researchers tried to adjust for these risk factors during their statistical analysis, but they may have missed important differences between the groups that could account for the results. This kind of study cannot prove that the plastics caused their problems.

“More research is needed and it is the first report suggesting a connection between microplastics and nanoplastics with disease in humans,” said Dr. Philip Landrigan of Boston College. Other scientists have found plastic bits in the lungs, liver, blood, and breast milk, “It does not prove cause and effect, but it suggests cause and effect,” he said, “And it needs urgently to be either confirmed or disproven (反驳) by other studies done by other investigators in other populations.”

1. What did the study find about the plastics in blood?
A.They are visible and detectable.B.They may raise the risk of serious injuries.
C.They need to be removed by surgery.D.They may account for a higher rate of heart attacks.
2. What did Raffaele Marfella suggest?
A.Immediate action should be taken by government.
B.Alarming message should be spread widely and quickly.
C.The awareness of the harm of plastic bits should be enhanced.
D.Joint efforts must be made to keep healthy physically and mentally.
3. What does paragraph 5 mainly talk about regarding the study?
A.Limitations.B.Advantages.C.Causes.D.Effects.
4. What did Dr. Philip Landrigan think of the study?
A.Helpful but unrealistic.B.Pioneering but impractical.
C.Distinctive but unnecessary.D.Suggestive but inconclusive.

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【推荐1】The reason why dominant (占支配地位的) men always seem to rise to the top has been uncovered. Researchers say they are able to make decisions far faster than those with nondom-inant personalities. It could explain why so many top CEOs and politicians are known for their dominant personalities.

The study found high-dominance men respond faster in situations where a choice is needed, regardless of social context. Promptness (敏捷) to respond in high-dominance men was accompanied by a noticeably amplified brain signal. In addition, when the researchers analyzed the EEG (脑电图) images of the high-dominance participants, they identified a higher activity in areas of the brain associated with emotion and behavior, compared to low-dominance participants.

This promptness in decision-making can act as a biomarker for social personalities. “Dominance itself depends partly on the ability to make decisions faster than others. This allows the individual to act first in social situations, which might result in an evolutionary advantage.” the team wrote.

They now hope to link these reading to roles such as CEOs, and to find out if the same differences happen in female. and children. “In the future, it will be important to find out whether even stronger brain signals are observed in particularly dominant individuals, such as CEOs,” said Carmen Sandi of the Ecole Poly technique Federale de Lausanne.

She added, “It will also be relevant to understand whether these differences in promptness to respond and brain signals are also observed in women that differ in dominance and whether they are already present in children. Our findings may open a new research approach using EEG signatures as a measure for social dominance.”

The study involved 240 male students at the University of Lausanne who were sorted into high or low dominance groups by a standard “dominance scoring” questionnaire proved in many former studies.

1. What makes dominant people stand out?
A.Their wiser decisions.B.Their kind personalities.
C.Their high social status.D.Their rapidity of responding.
2. Which word can replace the underlined word “amplified” in paragraph 2?
A.affectedB.adjustedC.enhancedD.controlled
3. What will the researchers use the findings to do?
A.Save people's life.B.Check on more people.
C.Test the participants' brain.D.Show the effect of dominance.
4. What can be inferred about the study from the text?
A.It used previous research findings.
B.It involved some women and children.
C.It showed how people became CEOs.
D.It corrected people’s ideas of dominance.
2020-10-28更新 | 135次组卷
阅读理解-阅读单选(约350词) | 适中 (0.65)
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文章大意:本文是说明文。文章主要介绍了越来越多的证据表示,将我们内心的感激转化为行动,可以使我们的生活更加美好。

【推荐2】The benefits of gratitude have long been championed in religious and philosophical thinking. In recent years, the science has been catching up: it shows that people who feel most grateful generally get a psychological boost as a result. They also have greater life satisfaction, fewer visits to the doctor and better sleep. This has led to gratitude becoming part of our daily routine, starting a trend of gratitude journals, in which you record things you are thankful for, and meditation practices in which you focus thoughts on them. However, the benefits of actually expressing this gratitude have received less attention. Now evidence is stacking up that shows turning our inner gratitude into action can make our lives even better.

For instance, a simple thank you can build relationships, even with strangers. Take people who have received a note of thanks for something they have done from a peer they don’t know. They are more likely to share their contact details with that person in an attempt to continue the relationship than people who receive a note that doesn’t contain thanks. A simple thank you seems to signal interpersonal warmth.

Expressing gratitude to a friend also changes your view of that relationship, making it feel stronger. In 2010, Nathaniel Lambert, at Florida State University, and his colleagues found that people who simply thought grateful thoughts about a friend, or even took part in positive interactions with them, didn’t experience the same effects.

But the benefits go further than just strengthening social bonds, they can have an impact on health, too. A study of more than 200 nurses working in two Italian hospitals found that gratitude expressed by patients could protect nurses from burnout. That was especially so in the emergency room, where personal interactions with patients are typically shorter and less rewarding. This positive feedback from patients reduced feelings of exhaustion among nurses, says Mara Martini at the University of Turin, who carried out the work.

1. What do the underline words “stacking up” in paragraph 1 mean?
A.disappearingB.approaching.C.ringing.D.increasing.
2. Which of the following is a benefit of expressing gratitude?
A.Building stronger relationships
B.Sleeping well during the night.
C.Getting a psychological boost.
D.Having attractive body shapes.
3. What does the study by Mara Martini indicate?
A.Nurses should require positive feedback from patients.
B.Patients should speak out their appreciation to nurses.
C.Doctors should improve their interpersonal skills
D.Hospitals should protect nurses from burnout.
4. What message does the text want to convey?
A.Friendship is worth sparing every effort.
B.Gratitude journals work for people who act.
C.Positive feedback helps improve health service
D.Thankfulness in action has unexpected benefits.
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【推荐3】Dreams are pictures, sounds and feelings that happen during sleep. According to modern researches, dreaming is an activity of the brain, which occurs when brainwaves are especially fast. In history people have had many explanations for dreams. In ancient Greece dreaming was thought to be a kind of contact with the gods. Sometimes they were regarded as signs of what may happen in the future.

Over the past centuries, many dream theories have come up. The most famous expert on dreaming was Sigmund Freud, an Austrian doctor, who believed that in dreams we acted out our desires and wishes that couldn’t be satisfied in reality.

Everyone dreams while most of the time we cannot remember our dreams. Even blind people dream. They may see images of events that they have experienced before they became blind. On the other hand, a person who was born blind does not see pictures in dreams, but they can hear, smell and taste in them.

Most people cannot control their dreams. They just happen. Very few people experience lucid dreaming. They know exactly that they are dreaming and can even control what happens in their dreams while they are asleep.

People often have the same dreams over and over again. They may be events in your life that have caused problems which you have not solved yet. Nightmares are dreams that are so terrible that you usually wake up. There is medical treatment for nightmares. You can go to a therapist who tries to find out why you have nightmares and how to deal with them.

Some experts think that dreams are full of symbolic messages that mean something which is deep inside us.

1. What do dreams mean to us according to Freud?
A.Ways to contact with the gods.B.Signs of the future events.
C.Wishes that cannot be satisfied.D.Things happening in our life.
2. What does the underlined word “lucid” in the 4 paraph mean?
A.Clear.B.Real.C.Frequent.D.Awful.
3. What would the writer talk about in the paragraph that follows?
A.Lucid dreams and their causes.B.Blind people and their experiences.
C.Common dreams and their meanings.D.Famous experts and their suggestions.
4. Where can we most probably read this passage?
A.An art magazine.B.A science newspaper.
C.A biology textbook.D.A news report.
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