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题型:阅读理解-阅读单选 难度:0.4 引用次数:174 题号:9593730

Do a country 's people get happier as it gets richer? Most governments seem to believe so, given their continuous focus on increasing GDP year by year. Reliable, long-term evidence linking wealth and happiness is, however, lacking. And measuring well-being is itself filled with problems, since it often relies on surveys that ask participants to assess their own levels of happiness subjectively.

Daniel Sgroi of the University of Warwick and Eugenio Proto of the University of Glasgow, both in Britain, think, nevertheless, that they have an answer.

By examining millions of books and newspaper articles published since 1820 in four countries (America, Britain, Germany and Italy), they have developed what they hope is an objective measure of each place’s historical happiness. And their answer is that wealth does bring happiness, but some other things bring more of it.

In Britain, for example, happiness fell sharply during the two world wars. It began to rise again after 1945, peaked in 1950, and then fell gradually, including through the so-called Swinging Sixties, until it reached a nadir around 1980.

America’s national happiness, too, fell during the world wars. It also fell in the 1860s, during and after the country 's civil war. The lowest point of all came in 1975, at the end of a long decline during the Vietnam war, with the fall of Saigon and America’s humiliating defeat.

Overall, then, Dr Sgroi and Dr Proto found that happiness does vary with GDP. But the effect of health and life expectancy is larger, even when the tendency of wealth to improve health is taken into account.

A one — year increase in longevity, for example, has the same effect on national happiness as a 4.3% increase in GDP. And, as the grand historical sweep suggests, it is warfare that causes the biggest drops in happiness.

On average it takes a 30% increase in GDP to raise happiness by the amount that a year of war causes it to fall. The upshot appears to be that, while increasing national income is important to happiness, it is not as important as ensuring the population is healthy and avoiding conflict.

1. According to the passage, why do most governments continuously focus on increasing GDP year by year?
A.To increase its people 's wealth.
B.To strengthen its people 's health.
C.To improve its people 's happiness.
D.TO improve its overall national strength.
2. What do Daniel and Eugenio probably agree?
A.Warfare has no effect on happiness.
B.Happiness has nothing to do with GDP.
C.GDP is the most important factor in improving people 's happiness.
D.Health and life expectancy bring more happiness than GDP does.
3. From the passage we can know that ________.
A.Happiness rose to the top in Britain around 1980.
B.America’s national happiness fell to the bottom in 1975.
C.A one — year increase in longevity has the same effect as GDP on happiness.
D.The fall of happiness caused by war takes a 30% increase in GDP to raise.
4. What’s the best title for the text?
A.What on earth can bring people 's happiness?
B.Why wealth can 't bring people 's happiness?
C.What effect can war have on people 's happiness?
D.Why health can bring happiness to people?

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阅读理解-阅读单选(约320词) | 较难 (0.4)
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文章大意:本文是一篇说明文。本文介绍了亚马孙河流流动对该地区生物多样性的贡献。

【推荐1】A new study focused on birds examines how the movements of rivers in the Amazon have contributed to that area’s exceptional biological diversity.The research team, led by the American Museum of Natural History, found that as small river systems change over time, they spur the evolution of new species. The findings also reveal previously unknown bird species in the Amazon that are only found in small areas next to these dynamic river systems, putting them at high risk of extinction.

The lowland rainforests of the Amazon River basin harbor(藏匿) more diversity than any other ecosystem on the planet. It is also a globally important biome(生物群落) containing about 18 percent of all trees on Earth and carrying more fresh water than the next seven largest river basins combined. Researchers have long wondered and hotly debated how the Amazon’s rich biodiversity arose and accumulated.

“Early evolutionary biologists like Alfred Russel Wallace noticed that many species of primates and birds differ across opposite riverbanks in the Amazon,”said the study’s lead author Lukas Musher. “Moreover, accumulating geological evidence has suggested that these rivers are highly dynamic, moving around the South American landscape over relatively short time periods, on the order of thousands or tens of thousands of years.”

To investigate how the movement of rivers across the landscape has influenced the accumulation of bird species in the Amazon, the researchers sequenced the genomes(基因组) of six species of Amazonian birds.

Because these rivers move around the landscape at different time scales, their movements can have varying outcomes for bird species: when river rearrangements occur quickly, populations of birds on each side can combine before they’ve had time to differ; when river changes happen slowly, species have a longer time to diverge from one another.

1. What does the underlined word “spur” in Paragraph 1 mean?
A.Stimulate.B.Renew.C.Pursue.D.Interrupt.
2. What have researchers debated on?
A.What the Amazon’s biodiversity indicates.B.How the Amazon’s biodiversity was formed.
C.Whether the Amazon has the richest biodiversity.D.Why Amazon bird species are at risk of distinction.
3. What can we conclude from LukasMusher’s words?
A.There are six species of American birds.
B.Rivers move very slowly in South America.
C.Most species differ across opposite Amazon riverbanks.
D.River movement may lead to the Amazon’s biodiversity.
4. What has influenced the change of bird species in the Amazon?
A.The location of river movement.B.The populations of birds.
C.The speed of river movement.D.The amount of the genomes.
2022-09-16更新 | 400次组卷
阅读理解-阅读单选(约360词) | 较难 (0.4)

【推荐2】If you are over 20, look away now. Your cognitive (认知的)performance is probably already on the wane. The speed with which people can process information decreases at a steady rate from as early as their 20s.

A common test of processing speed is the “digit symbol substitution test”, in which a range of symbols are paired with a set of numbers in a code. Participants are shown the code, given a row of symbols and then asked to write down the corresponding number in the box below within a set period. There is nothing cognitively challenging about the task: levels of education make no difference to performance. But age does. Speed declines as people get older.

Why this should be is still uncertain, but a range of tentative(尝试性的)explanations has been put forward. One points the finger at myelin, a white, fatty substance that coats axons, which carry signals from one neuron to another. Steady reductions in myelin as people age may be slowing down these connections. Another possibility, says Timothy Salthouse, director of the Cognitive Ageing Laboratory at the University of Virginia, is exhaustion of a chemical called dopamine(多巴胺).

Fortunately, there is some good news to go with the bad. Psychologists distinguish between “fluid intelligence”, which is the ability to solve new problems, and “crystallised intelligence”, which roughly equates to an individual’s stock of accumulated knowledge. These reserves of knowledge continue to increase with age: people’s performance on vocabulary and cognitive decline. In an old but instructive study of typists ranging in age from 19 to 72, older workers typed just as fast as younger ones, even though their tapping speed was slower. They achieved this by looking further ahead in the text, which allowed them to keep going more smoothly.

What does all this mean for a lifetime of continuous learning? It is encouraging so long as people are learning new tricks in familiar fields. “If learning can be absorbed into an existing knowledge base, advantage favours the old,” says Mr Salthouse.

1. The phrase “on the wane” (in paragraph 1) is closest in meaning to _______.
A.decliningB.improving
C.varyingD.maintaining
2. By “age does” (in paragraph 2), the writer means that _______。
A.the level of a participant’s education is related to how old he is
B.the older a participant is, the more slowly he writes down the number
C.a participant’s age affects his ability to figure out what the symbol means
D.how much time a participant is given to finish the task depends on his age
3. What can be inferred from the passage?
A.Dopamine has been proved to be a chemical that affects people’s cognitive ability.
B.One way to avoid cognitive decline is to have as much experience as possible in life.
C.Moving older workers into an entirely new area of knowledge is less likely to go well.
D.Crystallised intelligence plays an important role in keeping people alert in new situations.
4. What is the passage mainly about?
A.Why the brain fails with the age needs to be explored.
B.“Digit symbol substitution test” proves to be groundless.
C.One’s knowledge base matters more than his cognitive ability.
D.The brain changes in both good and bad ways as one ages.
2020-06-09更新 | 126次组卷
阅读理解-阅读单选(约410词) | 较难 (0.4)
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【推荐3】Every year migratory(迁徙的) bats travel from Mexico to Bracken Cave, where they spend the summer consuming insects that would otherwise hungrily eat common food crops. But the bats have been showing up far earlier than they did two decades ago.

In a study, scientists at Rothamsted Research, used radar data from 160 U.S. weather stations to analyze activity in the Texas bat colony from 1995 through 2017. They discovered the creatures were leaving their winter quarters in Mexico earlier and reproducing sooner. They were also astonished to find increasing numbers of bats overwintering(过冬)at Bracken Cave instead of heading back to their cold weather quarters in Mexico. Overwintering is a sign that warmer temperatures change the bats' annual rhythms, Rothamsted biologist Phillip Stepanian says.

A separate study of migratory bats in Indiana, published last year, found that temperature variations affected arrival and departure times-likewise hinting at the potential influence of climate change. Joy O'Keefe, a biology professor and co-author of that study, says early arrival at their summer habitats could expose these bats to cold snaps(寒流), and they could freeze to death.

Joy O’Keefe and her colleagues also found that changing bat migration times can also clash with rainfall patterns. Many insects that bats eat breed in seasonal lakes and puddles. If the bats arrive too early to benefit from summer rainfall and the resulting abundance of insects, they may struggle to feed their pups(幼崽) or skip reproduction altogether, O’Keefe says. She fears this shift could cause Midwestern bats to decrease toward extinction, which would be bad news for humans. “Declines in bat populations could have severe effects for crop success,” she says, adding that bats also “control significant disease vectors, such as mosquitoes.”

However, scientists are not certain that climate change alone is causing the Bracken Cave bat colony to migrate earlier. They have found a direct link between seasonal temperatures and bird migration, but bats are also influenced by factors such as changes in wind speed and direction. And there are other complications. “Bats are mysterious little animals that move mostly at night and are difficult to observe and track ,”   Stepanian says. “We have this conceptual picture of what might be happening, but really tying it to the cause is the next step.”

1. What is the best title for the passage?
A.Bats’ habitantsB.Endangered bats
C.Bats’ migrationD.Bats, our good friends
2. Scientists at Rothamsted Research found that ______.
A.bats prefer heading back to MexicoB.bats delay their reproduction
C.warming affects bat migrationD.radar can be used to observe bats
3. Joy O’Keefe discovered that ______.
A.bats are used to living in rainfall seasons
B.bats’ earlier migration might harm farming
C.insects' reproduction helps to spread disease
D.insects shortage makes bats reproduce earlier
4. What does the underlined word they refer to?
A.Insects.B.migration times.
C.Bats.D.lakes and puddles.
5. What does the last paragraph want to tell us?
A.Wind speed and direction affect bats.
B.It is difficult to observe and track bats.
C.Climate change makes bats migrate earlier.
D.Further research on the cause is necessary.
2020-04-09更新 | 191次组卷
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