Researchers found that they could use microbial fingerprints to_____ the person who had used a computer keyboard even after the keyboard sat _____ for two weeks at room temperature.
A.identify, untouched B.recognize, touching
C.distinguish, untouched D.acknowledge, touching
高二英语单项填空困难题
Researchers found that they could use microbial fingerprints to_____ the person who had used a computer keyboard even after the keyboard sat _____ for two weeks at room temperature.
A.identify, untouched B.recognize, touching
C.distinguish, untouched D.acknowledge, touching
高二英语单项填空困难题查看答案及解析
Researchers in Singapore found that eating mushrooms over twice per week could help prevent memory and language problems later in life.
According to the study, published in The Journal of Alzheimer's Disease, there is a unique antioxidant (抗氧化物质) present in mushrooms that helps protect certain brain functions.
Researchers observed 663 Chinese adults aged over 60 whose diets and lifestyles were tracked from 2011 to 2017. In the study, the participants were asked how often they ate six different types of mushrooms: oyster, shiitake, white button, dried, golden and tinned. The findings showed that eating more than two shares of mushrooms per week somehow lowered the chances of mild cognitive impairment (MCI) by 50% against those who ate fewer than one share.
MCI is a condition that can make people forgetful, affect their memory and cause problems with language, attention and finding the exact position of objects in space. Changes in behavior can be not very noticeable and not serious enough to be known as dementia (痴呆).
Participants who ate more mushrooms were found to perform better in thinking and processing exams and also exhibited a faster processing speed. The advantage was reportedly more apparent in those who ate more than two shares a week or more than 300 grams.
The scientists pointed out, however, that they have yet to put up a direct link between the fungi(蘑菇) and brain function.
The researchers also acknowledged that since this study mainly relied on self-reported information on mushroom intake and other dietary factors, further studies may be required. Still, the lead study author Lei Feng is encouraged by their findings. ''This relevance is surprising and encouraging, '' Lei said.
Mushrooms are one of the richest dietary sources of ergothioneine (麦角硫茵氨基酸) — a substance which we humans can’t make on our own.
1.What aspect of research did researchers mainly do in paragraph 3?
A.Culture of diets. B.Existence of MCI.
C.The types of mushrooms. D.The benefit of eating mushrooms.
2.What can we know about MCI?
A.It can affect memory seriously.
B.It can result in language problems.
C.It can make people easy to be lost.
D.It can reduce the chance of forgetfulness.
3.What is the result if students often eat more mushrooms?
A.They love communicating with others.
B.Their thinking ability is quicker than the majority.
C.Their processing speed will be faster.
D.Their academic performance improves significantly.
4.Where is this passage most likely from?
A.A science report. B.An advertisement.
C.Adult’s literature. D.Scientific fiction.
高二英语阅读理解中等难度题查看答案及解析
Researchers found that people become happier and experience less worry after they reach the age of fifty. In fact, they say by the age of eighty-five, people are happier with their life than they were when they were eighteen years old.
The findings came from a survey of more than 340,000 adults in the United States. The Gallup(民意调查) Organization questioned them by telephone in 2008. At that time, the people were between the ages of eighteen and eighty-five.
The researchers asked questions about emotions like happiness, sadness and worry. They also asked about mental or emotional stress.
Arthur Stone at Stony Brook University in New York led the study. His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five. The findings showed that stress levels dropped sharply after people reached their fifties. Happiness was highest among the youngest adults and those in their early seventies. The people least likely to report feeling negative emotions were those in their seventies and eighties.
Researchers say they do not know why happiness increases as people get older. One theory is that, as people grow older, they grow more thankful for what they have and have better control of their emotions. They also spend less time thinking about bad experiences.
Professor Stone says the emotional patterns could be linked to changes in how people see the world, or maybe even changes in brain chemistry.
The researchers also considered possible influences like having young children, being unemployed or being single. But they found that influences like these did not affect the levels of happiness and well-being related to age.
The study also showed that men and women have similar emotional patterns as they grow older. However, women at all ages reported more sadness, stress and worry than men.
1. What can be the best title of the text?
A. Happiness Varies with Ages
B. Experience More, Worry Less
C. The Older, the Wiser
D. Being Young, Being Happy
2.We can learn from the research that _________.
A. only when people get older will they feel happier
B. stress levels among the youngest are the highest
C. older people tend to be grateful
D. older people usually have no worries
3.According to the research, when people get older, _________.
A. they miss the old days
B. they are physically weak
C. they have better self-control
D. they are more emotional
4.What would the author probably talk about next?
A. What influences happiness.
B. How to live better.
C. How to keep happier.
D. Why women are less happier.
5.The author is intended to _________.
A. advise how to reduce stress
B. introduce a scientific finding
C. describe how to do research
D. talk about human emotions
高二英语阅读理解中等难度题查看答案及解析
Researchers found that people become happier and experience less worry after they reach the age of fifty. In fact, they say by the age of eighty-five, people are happier with their life than they were when they were eighteen years old.
Arthur Stone in the Department of Psychiatry and Behavioral Science at Stony Brook University in New York led the study. His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five. The findings showed that stress levels dropped sharply after people reached their fifties. Happiness was highest among the youngest adults and those in their early seventies. The people least likely to report feeling negative emotions were those in their seventies and eighties.
The findings appeared in the Proceedings of the National Academy of Sciences. Researchers say they do not know why happiness increases as people get older. One theory is that, as people grow older, they grow more thankful for what they have and have better control of their emotions. They also spend less time thinking about bad experiences.
The researchers considered possible influences like having young children, being unemployed or being single. But they found that influences like these did not affect the levels of happiness and well-being related to age.
The study also showed that men and women have similar emotional patterns as they grow older. However, women at all ages reported more sadness, stress and worry than men.
1.What is the best title of the passage?
A. The older a person is, the more stressed he feels.
B. The more lighthearted a person is, the happier he is.
C. The older a person is, the more clever he grows.
D. The older a person is, the happier he grows.
2.According to the researchers, what is probably the reason why people grow happier when they get older?
A. When people get older, they can’t remember bad experiences.
B. When people get older, they have no young children to care about.
C. When people get older, they learn to adjust their feelings.
D. When people get older, they don’t care about their feelings.
3.What do you think the Proceedings of the National Academy of Sciences is?
A. A Gallup organization. B. A popular science magazine.
C. A university in New York. D. A research institution
4.What would the writer probably deal with in next paragraph?
A. Advice to the young people on how to keep happy.
B. Advice to the old people on how to live longer.
C. Why women at all ages are more sad, stressed and worried.
D. Why people will grow happier with their ages.
高二英语阅读理解中等难度题查看答案及解析
In the early 1950s, researchers found that people scored lower on intelligence tests if they spoke more than one language. Research in the sixties found the opposite. Bilingual people scored higher than monolinguals, people who speak only one language. So which is it?
Researchers presented their newest studies last month at a meeting of the American Association for the Advancement of Science. The latest evidence shows that being bilingual does not necessarily make people smarter. But researcher Ellen Bialystok says it probably does make you better at certain skills.
Ellen Bialystok said, “Imagine driving down the highway. There’re many things that could capture your attention and you really need to be able to monitor all of them. Why would bilingualism make you any better at that?”
And the answer, she says, is that bilingual people are often better at controlling their attention — a function called the executive control system.
Ms. Bialystok is a psychology professor at York University in Toronto, Canada. She says the best method to measure the executive control system is called the Stroop Test. A person is shown words in different colors. The person has to ignore the word but say the color. The problem is that the words are all names of colors.
Ellen Bialystok said, “So you would have the word blue written in red, but you have to say red. But blue is so salient(显著的), it’s just lighting up all these circuits(电路) in your brain, and you really want to say blue. So you need a mechanism(机制) to override that so that you can say red. That’s the executive control system.”
Her work shows that bilingual people continually practice this function. They have to, because both languages are active in their brain at the same time. They need to suppress(抑制) one to be able to speak in the other.
This mental exercise might help in other ways, too. Researchers say bilingual children are better able to separate a word from its meaning, and more likely to have friends from different cultures. Bilingual adults are often four to five years later than others in developing dementia or Alzheimer’s disease.
1.What’s the best title of the text?
A. Bilingual People, Smarter
B. Monolingual People, Smarter
C. Bilingual People, Longer Lives
D. Bilingual People, Better at Some Skills
2.The underlined word “override” in Paragraph 6 probably means ____.
A. pay attention to B. take no notice of
C. take an interest in D. take care of
3.In the Stroop Test, supposing you have the word yellow written in white, you will have to say ____.
A. white B. yellow C. blue D. red
4.Which group of people can most likely pass the Stroop Test?
A. People who can speak only Chinese.
B. People who can speak only Japanese.
C. People who can speak more than one language.
D. People who can speak only English.
5.Which of the following statements is FALSE according to the text?
A. A bilingual child is better at separating a word from its meaning.
B. A bilingual child can more easily make friends with a foreign child.
C. Bilingual people are more able to monitor several things at the same time.
D. It’s not possible for bilingual people to develop Alzheimer’s disease.
高二英语阅读理解困难题查看答案及解析
Dogs are man’s best friends---they are very good for children’s health. Researchers found that family pets helped to protect babies against breathing problems and infections (感染).
A team from Kuopio University Hospital in Finland studied 397 babies born at their hospital between September 2012 and May 2015 for their first year. They found that babies who lived with a dog or a cat spent fewer weeks with ear infections, coughs or runny noses. They were also less likely to need antibiotics (抗生素) than babies in homes without a pet.
Study author, Dr. Eija Bergroth, said dogs brought dirt and bacteria (细菌) into the home, which helped children’s immune system (免疫系统) to be strong. This improved their defenses against bacteria.
As part of the study, parents filled out weekly diaries starting when the children were nine weeks old, recording information on babies’ health as well as their contact with cats and dogs. They recorded if they had fever, ear infections, coughs or running noses. They also put down whether they needed antibiotics.
Based on those diaries, the researchers found that about a third of the children spent most of their first year with a pet dog and 24 percent in a home with a cat. And children with no dog contact at home were healthy for 65 percent of the time, compared to between 72 and 76 percent for those who did have a pet.
The researchers also found that contact with dogs, more than cats, was tied to fewer weeks of sickness for babies.
However, the researchers said they couldn’t rule out the possibility that people who own dogs are less likely to get sick for another reason, not due to any protection offered by pets.
1.The researchers studied each child’s life ____.
A. for a year
B. for three years
C. for four years
D. all through childhood
2.How are dogs able to benefit children?
A. By fighting bacteria.
B. By stopping them from going out.
C. By strengthening their immune system.
D. By producing the antibiotics they need.
3.What do the underlined words, “rule out”, in the last paragraph probably mean?
A. Determine. B. Separate.
C. Control. D. Ignore.
4.We can learn from the text that ___.
A. dogs are very friendly towards people.
B. dogs are better for babies’ health than cats.
C. dogs have the most benefits for man.
D. dogs are free from antibiotics.
高二英语阅读理解中等难度题查看答案及解析
A recent university study found that current electric cars could be used for 87% of daily car journeys in the US. That figure could rise to 98% by 2020.
One hurdle to the widespread adoption of electric cars has been “range anxiety” ---drivers’ concerns about running out of petrol on a journey. While petrol stations are conveniently located across national road systems, the necessary network of electric charging stations is still being developed. In fact, charging points are becoming increasingly common throughout the USA.
Attitudes towards electric vehicles have changed quite considerably over the last few years. Not that long ago, electric cars met with doubt, and their high price drove customers away. Thanks to improvements in battery capacity(电池容量), recharging times, performance and price, the current generation of electric cars is starting to persuade critics.
As well as progress on the road, electric vehicles are taking to the sea and sky. Electric boats are among the oldest electric vehicles, having enjoyed several decades of popularity from the late 19th to the early 20th century before petrol-powered outboard motors took over. Now, the global drive for renewable energy sources is bringing electric boats back. Steps towards electric planes are also being made, with Airbus and NASA among the organizations developing and testing battery-powered planes. The experiments could soon make electric flight a reality.
Electric vehicles do not produce any emissions(排放物). Were the US to act on the study’s findings and replace 87 percent of its cars with electric vehicles, it would reduce the national demand for petrol by 61 per cent. However, because of the production processes and the generation of electricity required to charge these vehicles, they cannot claim to be completely emission-free. Even so, as many countries continue to increase their use of renewable energy sources, electric vehicles will become even cleaner.
1.The underlined word “hurdle” refers to ________.
A. limit B. step
C. result D. aim
2.Why were not the electric cars popular with many people in the past?
A. They were not widely improved.
B. They were very poorly made.
C. They were not good value.
D. They couldn’t travel at a high speed.
3.What is the purpose of Paragraph 4?
A. To show why more people have interest in electric cars.
B. To describe different ways electric vehicles can be used.
C. To introduce the history of electric vehicles
D. To explain why the world needs more electric cars.
4.Which of the following can be the best title for this passage?
A. Driving into the Future B. Problems with Petrol Cars
C. My Dream Car D. History of Electric Cars
高二英语阅读理解困难题查看答案及解析
单词拼写 （共5小题；每小题1分，满分5分）
1.Each person’s fingerprints are u____________, so they can be used to confirm one’s identity.
2.To c____________ a new bridge on the river calls for a large sum of money.
3.At first, we were suspected, but we finally c___________ them of our innocence.
4.In a dictionary the words are a____________ in alphabetical order.
5.How s____________ the Palace Museum looks! It has attracted millions of tourists.
高二英语单词拼写中等难度题查看答案及解析
Whale researchers believe they have found a new way to measure the amount of stress felt by whales when they experience serious threats, such as being hit by a ship, and they say the technique could help protect the huge sea creatures from dying off.
American Rosalind Rolland is the lead scientist on the project. She and her team are with the New England Aquarium in Boston, Massachusetts. They measured stress hormones (荷尔蒙 ) by studying baleen, a substance found in the upper part of the mouth of some kinds of whale. She explains that the baleen serves as a record that shows a spike in stress hormones when whales face dangers such as a changing climate and ship strikes. Scientists can then read these records, similar to reading the rings on a tree.
Understanding the information is important because whales who often feel stressed are less likely to be reproductive and more likely to become sick. That combination is not good for the whale population, which is already dangerously low.
The scientists did their work on a whale that had become trapped in fishing equipment, which some scientists estimate kills up to 300, 000 whales and dolphins annually. It was finally killed by Inuit hunters who found it trying to drag the fishing equipment. The hunters said the whale seemed to lack energy. When scientists examined the dead whale, they found its mouth showed an increase in stress hormones 20 times greater than normal.
Regina Asmutis-Silvia is a biologist with the Whale and Dolphin Conservation in Massachusetts. She didn’t participate in the research, but she says it is important. “We clearly understand that stress is bad for humans. We also need to understand that stress is bad for other animals, too,” she adds.
1.What does the text mainly tell us?
A.The dangers the whale often faces.
B.The measures to stop sea life being hit.
C.A discovery to measure stress on whales.
D.A way to protect the mouth of the whale.
2.Which of the following can best replace “spike” underlined in Paragraph 2?
A.Rise. B.Change. C.Crash. D.Slide.
3.What may a whale living a stressful life be like?
A.Calm and fierce. B.Unhealthy and unable to reproduce.
C.Uneasy and energetic. D.Sizeable and likely to lose appetite.
4.Why does the author mention the words by Regina?
A.To move on to another topic.
B.To stress the importance of the finding.
C.To tell the necessity of studying other animals.
D.To show the similarity between humans and animals.
高二英语阅读理解简单题查看答案及解析
British researchers have found that children’s IQ predicts their probability of becoming vegetarians (素食者) as young adults.
Recent studies suggest that vegetarianism may be associated with lower cholesterol (胆固醇), reduced risk of overweight and heart disease.
“We know from other studies that brighter children tend to behave in a healthier fashion as adults—they’re less likely to smoke, less likely to be overweight，less likely to have high blood pressure and more likely to take exercise.” lead author Catharine Gale said, “This study provides further evidence that people with a high IQ tend to have a healthier lifestyle.”
In the study, Gale’s team collected data on nearly 8,200 men and women aged 30, whose IQ had been tested when they were 10 years of age.
“Children who scored higher on IQ tests at age 10 were more likely than those who got lower scores to report that they were vegetarian at the age of 30.”Gale said.
The researchers found that 4.5 percent of participants were vegetarians. Of these, 2.5 percent were vegan, and 33.6 percent said they were vegetarian but also ate fish or chicken.
There was no difference in IQ score between strict vegetarians and those who said they were vegetarian but also ate fish or chicken，the researchers added.
One expert said the findings weren’t the whole answer，however.
“We don’t know the beliefs or attitudes of the parents of the children，nor do we know if there was a particular event that led these children to becoming vegetarian in their teens or adulthood.” said Lona Sandon, and assistant professor at the University of Texas Southwestern Medical Center at Dallas.
1.From the article，we know that ________.
A．brighter children are likely to become vegetarians when they are ten.
B．people with a higher IQ will not be overweight
C．brighter children are likely to have a healthier lifestyle
D．overweight may cause high blood pressure
2.What does the underlined word “vegan” in the sixth paragraph mean?
A．Someone who only eats vegetables.
B．Someone who chooses not to eat meat or fish.
C．Someone who likes eating meat and fish.
D．Someone who likes eating vegetables.
3.This study left some unanswered questions EXCEPT “________”．
A．Did the vegetarian children grow up in a family with a vegetarian parent?
B．Did the children eat a primarily vegetarian diet at the age of 10?
C．Were meatless meals regularly served in the participants’ families?
D．Did the vegetarian children really have a high IQ?
4.The main idea of the passage is that ________.
A．the low IQ children will be unhealthier when they grow up
B．being vegetarians can reduce the risk of overweight and heart disease
C．IQ is important to vegetarians
D．high IQ children are more likely to become vegetarian when they grow up
高二英语阅读理解中等难度题查看答案及解析