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题型:阅读理解-阅读单选 难度:0.65 引用次数:119 题号:12474786

In 2015, astronaut Scott Kelly made himself a guinea pig for NASA's "twins study," designed to see what spaceflight does to the human body. It was for all the people who dream of human journeys to Mars and other destinations in space. Kelly rode a rocket into space and spent nearly a year on the International Space Station in low Earth orbit, while his identical twin brother, Mark Kelly, served as the comparison subject and stayed on Earth's surface.

The full results, published Thursday in the journal Science, showed that Scott Kelly experienced numerous physiological and chromosomal(染色体的)changes during his long stay in orbit, including changes in gene expression. His immune system went on high alert, both when he went to space and upon returning to Earth. His body acted as if it were under attack.

One of the most dramatic findings concerned epigenetics(实验胚胎学) — how genes are turned on or off to produce proteins. Gene expression changed in both Kellys during the study but in significantly different ways. The study found that more than 90 percent of Scott Kelly's gene expression changes returned to normal when he landed on the surface. His telomeres(染色体端粒), structures which break over time as part of the natural aging process, lengthened in space. But that didn't necessarily mean being younger, the study found, because most telomeres shortened dramatically when he returned to Earth.

Months later, tests showed that slight changes in telomeres length still remained and left some influence on Scott Kelly, which means he and his brother are no longer identical twins. "He might be at some increased risk for cardiovascular disease or some types of cancer," said Susan Bailey, a biologist at Colorado State University who led one of the investigations in the study.

However, the researchers, echoing what NASA has suggested previously, said the twins study turned up no showstoppers — no shocking health consequences that would surely prevent a human mission to Mars or similar long-duration mission.

1. What does the underlined expression "a guinea pig" in Paragraph 1 mean?
A.a person who is strong enough to become an astronaut.
B.a person who is a leader of space exploration.
C.a person who is picked out for a scientific experiment.
D.a person who is faced with the harsh effects of space flight.
2. What happens to an astronaut's body during a space flight?
A.The permanent changes in gene expression.B.The aging of cells.
C.The lengthened telomeres.D.The failure in immune system.
3. What can we learn from the passage?
A.Scott Kelly will appear younger because his telomeres lengthened in space.
B.A long-duration spaceflight will be banned because of the damage to health.
C.Scott Kelly's gene expression changes were normal when he returned to the surface.
D.Scott Kelly might be more likely to develop cardiovascular disease or some types of cancer.
4. What can be a suitable title for the text?
A.Gene expression: Physiological Change of Proteins.
B.Space Experiment: Changes in Both Kellys.
C.Mars Exploration: an Unstoppable Human Mission.
D.Shortened Telomeres: the Killer of Astronauts.

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文章大意:本文是一篇说明文。文章介绍了黄色通常是代表快乐和愉悦情绪的颜色,但是一项新的研究表明,黄色与情感的关联会受到一些其他因素的干扰。

【推荐1】Yellow is usually the color of happy, joyful emotions. But according to a new study, not all people associate the color with good feelings.

To find out what factors might play a role, researchers tested a new hypothesis (假设): What if people’s physical surroundings affect their feelings about certain colors? For example, if someone lived in cold and rainy Finland, would he feel differently about the color yellow from someone who lived near the Sahara Desert?

The researchers looked at color-emotion data from an ongoing international survey of 6, 625 people in 55 countries. The survey asked participants to rate 12 colors on how closely they were associated with feelings including joy, pride, fear, and shame.

The researchers paid particular attention to the data for yellow, and analyzed how different factors—including hours of sunshine, hours of daylight, and the amount of rainfall—were associated with the emotions people reported for the color. The two best predictors of how people felt about yellow were the annual amount of rainfall, and how far they lived from the equator (赤道).

Overall, people were more likely to associate yellow with joy when they lived in rainier countries that lay farther from the equator, researchers reported in the Journal of Environmental Psychology. In Egypt, the likelihood (可能性) of yellow being associated with joy was just 5. 7%, whereas in chilly Finland it was 87. 7%. In the United States, with its mild climate and amber (琥珀色的) waves of grain, people’s yellow-joy association levels were between 60% and 70%.

The researchers also checked whether associations changed with the season—whether, for example, people in a certain country liked yellow more in the winter than they did in the summer. They found that opinions about the color remained fairly constant all year round—even when the weather changed, the data on yellow-joy associations were as good as gold.

1. What did the researchers do before the survey?
A.They went to Finland.B.They made an assumption.
C.They studied certain colors.D.They analyzed some data.
2. Which of the following affects people’s feelings about yellow?
A.The changeable weather.B.The length of daytime.
C.The geographical position.D.The amount of snowfall.
3. How did the researchers carry out the survey?
A.By interviewing participants.B.By studying the data collected.
C.By traveling around the world.D.By looking at color combinations.
4. What can be the best title for the text?
A.Yellow: Associated with Good FeelingsB.Color: An Important Role in Joy
C.Yellow: Connected with Joy ConditionallyD.Color: Associated with Emotions
2023-05-09更新 | 145次组卷
阅读理解-阅读单选(约360词) | 适中 (0.65)
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文章大意:本文是一篇说明文。文章主要介绍了消费者在面临过多选择而焦虑时该如何应对。

【推荐2】Even before the Internet brought unlimited consumer options directly into our homes, choice had long been seen as the driving force of capitalism (资本主义). The possibility of consumers to choose between competing providers of products and services decides which businesses will grow rapidly and which will bite the dust. The competitive environment caused by consumers’ free choice supposedly drives innovation and efficiency, delivering a better overall consumer experience.

However, recent experiments on consumer behaviour have suggested that too many options can lead to a range of anxieties in consumers—from the fear of missing out (FOMO) on a better opportunity, to the loss of pleasure in a chosen activity (thinking “why am I doing this when I could have been doing something else?”) and regret from choosing poorly. The raised expectations presented by a broad range of choices can lead some consumers to feel ill-informed and indecisive when making a purchasing decision.

Fortunately, randomness offers us a simple way to overcome the choice-related anxieties. When faced with a multitude of choices, many of which you would be happy to accept, throwing a coin may be the better option. This “randomized” strategy can help us to focus on our true preference and sometimes making a quick good choice is better than making a slow perfect one, or indeed making no decision at all.

It’s important to remember that you are not required to follow the randomized decision blindly. The suggested choice is just designed to put you in the position of having to seriously consider accepting the specified option, but doesn't force your hand one way or the other.

For those of us who struggle to make decisions, it’s comforting to know that when struggling with a selection, we can get out a coin and allow it to help. Even if we resolve to reject the outcome, being forced to see both sides of the argument can often kickstart or speed up our decision-making process.

1. Which is closest in meaning to “bite the dust” in paragraph 1?
A.Survive.B.Fail.C.Adapt.D.Benefit.
2. The above-mentioned experiments have suggested that __________.
A.too many options could make consumers more anxious
B.more choices usually led to better consumer experiences
C.companies are more innovative in a competitive environment
D.customers could make better decisions with enough information
3. What does the author advise us to do when we are faced with unimportant choices?
A.Focus on our true preference.B.Delay the decision indefinitely.
C.Accept the randomized strategy.D.Throw the coins more than once.
4. In which section of a newspaper may this text appear?
A.Economy.B.Politics.C.Health.D.Psychology.
2023-12-08更新 | 78次组卷
阅读理解-阅读单选(约480词) | 适中 (0.65)
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【推荐3】What does it mean to live a good life? This question has been debated for centuries. In the field of psychology, two main concepts of the good life have been quite popular: A happy life full of pleasure and positive emotions, and a meaningful life full of purpose and sacrifice. But what if these aren’t the only options?

In recent years, a long-neglected version of the good life has been receiving greater attention: the psychologically rich life. It is full of complex mental engagement, a wide range of intense and deep emotions, and diverse, novel, surprising and interesting experiences. Sometimes they are neither pleasant nor meaningful. However, they are rarely boring or monotonous.

After all, both happy and meaningful lives can become monotonous and repetitive. A person with a steady office job, married with children, may be satisfied and find his or her life meaningful and still be bored. Also, the psychologically rich life doesn’t necessarily involve economic richness. For instance, consider Hesse’s character Goldmund, who has no money but pursues the life of a free spirit.

Research has found psychological richness is related to, but partially distinct from, both happy and meaningful lives. Psychological richness is related with openness to experience and experiencing both positive and negative emotions more intensely. But is the psychologically rich life one that people actually want?

In a new study, Oishi and his colleagues asked people in nine countries the degree to which they value a psychologically rich life, a happy life and a meaningful life. They found many people’s self-described ideal lives involve psychological richness. When forced to choose a life, however, the majority chose a happy life and a meaningful life. Even so, a minority of people still favored the psychologically rich life, ranging from 6.7% in Singapore to 16.8% in Germany.

These numbers went up when the desire for a psychologically rich life was measured indirectly. To understand what a person wishes their lives might have been, it is important to explore what people wish they had avoided in their lives. When asked what they regret most and whether undoing this event would have made their lives happier, more meaningful or psychologically richer, about 28% of Americans said undoing the regrettable event would have made their lives psychologically richer.

These findings suggest that while most people strive to be happy and have meaning in their lives, a sizable number of people are content merely living a psychologically rich existence.

As Oishi and his colleagues conclude, “We believe that taking the psychologically rich life seriously will deepen and enrich our understanding of well-being.” At the end of the day, there is no one singularly acceptable path to the good life. You have to find a path that works best for you.

1. According to the passage, the psychologically rich life _______.
A.means living a luxurious life
B.involves various intense emotions
C.combines pleasure with purpose
D.emphasizes openness and repetition
2. What does Oishi’s research indicate?
A.The Germans prefer psychological richness to a happy life.
B.Undoing regrettable events has enriched many people’s lives.
C.A hidden desire for psychological richness exists among some people.
D.People with psychological richness tend to describe their lives as ideal.
3. We can learn from the passage that _______.
A.purpose outweighs pleasure in terms of significance
B.the choice of a good life differs from person to person
C.a positive mindset helps us understand our well-being
D.we should never be content and always strive for the best
4. What is the main purpose of the article?
A.To compare different concepts of a good life.
B.To explain how to live a psychologically rich life.
C.To persuade people to attain psychological richness.
D.To draw attention to a less familiar version of a good life.
2021-01-22更新 | 448次组卷
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