Recently according to a new research, humans have had a link to starches (含淀粉的食物) for up to 120,000 years — that’s more than 100,000 years longer than we’ve been able to plant them in the soil during the time of the ice Age’s drawing to an end. The research is part of an ongoing study into the history of Middle Stone Age communities.
An international team of scientists identified evidence of prehistoric starch consumption in the Klasies River Cave, in present-day South Africa. Analyzing small, ashy, undisturbed hearths(壁炉) inside the cave, the researchers found “pieces of burned starches” ranging from around 120,000 to 65,000 years old. It made them the oldest known examples of starches eaten by humans.
The findings do not come as a complete surprise — but rather as welcome confirmation of older theories that lacked the related evidence. The lead author Cynthia Larbey said that there had previously only been genetic biological evidence to suggest that humans had been eating starch for this long. This new evidence, however, takes us directly to the dinner table, and supports the previous assumption that humans’ digestion genes gradually evolved in order to fit into an increased digestion of starch.
Co-author Sarah Wurz said, “The starch remains show that these early humans living in the Klasies River Cave could battle against their tough environment and find suitable foods and perhaps medicines. And as much as we all still desire the tubers (块茎), these cave communities were gilling starches such as potatoes on their foot-long hearths. They knew how to balance their diets as well as they could, with fats from local fish and other animals.”
As early as the 1990s, some researchers started to study the hearths in the Klasies River Cave. Scientist Hilary Deacon first suggested that these hearths contained burned plants. At the time, the proper methods of examining the remains were not yet available. We now know human beings have always been searching for their desired things.
1.When did humans begin to farm starches?
A.After the Ice Age. B.After the Middle Stone Age.
C.About 20,000 years ago. D.About 100,000 years ago.
2.What was the previous assumption of starches?
A.Starch diet promoted food culture. B.Starch diet shaped humans’ evolution.
C.Starches had a variety of functions. D.Starches offered humans rich nutrition.
3.What can we learn about the early humans described by Sarah Wurz?
A.They were smart and tough. B.They preferred plants to meat.
C.They were generally very healthy. D.They got along with each other.
4.What’s the best title for the text?
A.Great Civilization of South Africa B.The Evolution of Foods in History
C.Starches--the Important Food of Today D.Big Findings--the Starches in Ancient Times
高三英语阅读理解困难题
Recently according to a new research, humans have had a link to starches (含淀粉的食物) for up to 120,000 years — that’s more than 100,000 years longer than we’ve been able to plant them in the soil during the time of the ice Age’s drawing to an end. The research is part of an ongoing study into the history of Middle Stone Age communities.
An international team of scientists identified evidence of prehistoric starch consumption in the Klasies River Cave, in present-day South Africa. Analyzing small, ashy, undisturbed hearths(壁炉) inside the cave, the researchers found “pieces of burned starches” ranging from around 120,000 to 65,000 years old. It made them the oldest known examples of starches eaten by humans.
The findings do not come as a complete surprise — but rather as welcome confirmation of older theories that lacked the related evidence. The lead author Cynthia Larbey said that there had previously only been genetic biological evidence to suggest that humans had been eating starch for this long. This new evidence, however, takes us directly to the dinner table, and supports the previous assumption that humans’ digestion genes gradually evolved in order to fit into an increased digestion of starch.
Co-author Sarah Wurz said, “The starch remains show that these early humans living in the Klasies River Cave could battle against their tough environment and find suitable foods and perhaps medicines. And as much as we all still desire the tubers (块茎), these cave communities were gilling starches such as potatoes on their foot-long hearths. They knew how to balance their diets as well as they could, with fats from local fish and other animals.”
As early as the 1990s, some researchers started to study the hearths in the Klasies River Cave. Scientist Hilary Deacon first suggested that these hearths contained burned plants. At the time, the proper methods of examining the remains were not yet available. We now know human beings have always been searching for their desired things.
1.When did humans begin to farm starches?
A.After the Ice Age. B.After the Middle Stone Age.
C.About 20,000 years ago. D.About 100,000 years ago.
2.What was the previous assumption of starches?
A.Starch diet promoted food culture. B.Starch diet shaped humans’ evolution.
C.Starches had a variety of functions. D.Starches offered humans rich nutrition.
3.What can we learn about the early humans described by Sarah Wurz?
A.They were smart and tough. B.They preferred plants to meat.
C.They were generally very healthy. D.They got along with each other.
4.What’s the best title for the text?
A.Great Civilization of South Africa B.The Evolution of Foods in History
C.Starches--the Important Food of Today D.Big Findings--the Starches in Ancient Times
高三英语阅读理解困难题查看答案及解析
According to a team of researchers, an animals' ability to perceive(感知)time is linked to their pace of life.
"Our results lend support to the importance of time perception in animals where the ability to
perceive time in a very short time may be the difference between life and death for fast moving
creatures." commented lead author Kevin Healy from Trinity College Dublin.
The study was done with a variety of animals using a phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans.
One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies "observe motion in a shorter time than our own eyes can achieve," which allows them to avoid being hit.
Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly(共同地) on the research project, said in a statement, "Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might not be deep thinkers, but they can make good decisions very quickly."
In comparison the tiger beetle(虎甲虫)runs faster than its eyes can keep up, basically becoming blind, which requires it to stop periodically to re-evaluate its prey's(猎物)position.
Our results suggest that time perception offers an as yet unstudied dimension along which
animals can specialize and there is considerable range to study this system in more detail.
1.What is the research mentioned in the passage mainly about?
A. Pace of life of animals. B. Time perception of animals.
C. Lifetime of small animals. D. Impressive abilities of animals.
2.Why can houseflies avoid being hit?
A. They can think very deeply before they act.
B. They can fly much faster than their eyes can keep up.
C. They can process the information as quickly as they receive it.
D. They can send information to brain more quickly than to their eyes.
3.What will a tiger beetle have to do to catch a moving prey?
A. Try to run as fast as it can. B. Prevent itself from becoming blind.
C. Slow down to gain its time perception. D. Stop occasionally to spot the prey again.
高三英语阅读理解中等难度题查看答案及解析
According to a team of researchers, an animals’ ability to perceive(感知)time is linked to their pace of life.
“Our results lend support to the importance of time perception in animals where the ability to perceive time in a very short time may be the difference between life and death for fast moving creatures.” commented lead author Kevin Healy from Trinity College Dublin.
The study was done with a variety of animals using a phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans.
One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies “observe motion in a shorter time than our own eyes can achieve,” which allows them to avoid being hit.
Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly on the research project, said in a statement, “Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might not be deep thinkers, but they can make good decisions very quickly. ”
In comparison, the tiger beetle (虎甲虫）runs faster than its eyes can keep up, basically becoming blind, which requires it to stop periodically to re-evaluate its prey’s (猎物)position.
Our results suggest that time perception offers an as yet unstudied dimension along which animals can specialize and there is considerable range to study this system in more detail.
1.What is the research mentioned in the passage mainly about?
A. Pace of life of animals. B. Time perception of animals.
C. Lifetime of small animals. D. Impressive abilities of animals.
2.What does Kevin Healy’s comment mean in Para. 2?
A. The ability of animals to perceive time depends on their high moving speed.
B. The survival of fast moving animals relies on their ability to perceive time.
C. Animals with quicker pace of life have better perception of time.
D. Animals with poor ability of time perception have a shorter life.
3.Why can houseflies avoid being hit?
A. They can think very deeply before they act.
B. They can fly much faster than their eyes can keep up.
C. They can process the information as quickly as they receive it.
D. They can send information to brain more quickly than to their eyes.
4.What will a tiger beetle have to do to catch a moving prey?
A. Try to run as fast as it can.
B. Prevent itself from becoming blind.
C. Slow down to gain its time perception.
D. Stop occasionally to spot the prey again.
高三英语阅读理解中等难度题查看答案及解析
According to a team of researchers, an animal’s ability to perceive(感知) time is linked to their pace of life.
“Our results lend support to the importance of time perception in animals where the ability to perceive time in a very short time may be the difference between life and death for fast moving creatures.” commented lead author Kevin Healy from Trinity College Dublin.
The study was done with a variety of animals using phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans.
One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies “observe motion In a shorter time than our own eyes can achieve,” which allows them to avoid being hit.
Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly on the research project, said in a statement, “Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no Value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might now be deep thinkers, but they can make good decisions very quickly.”
In comparison, the tiger beetle (虎甲虫) runs faster than its eyes can keep up, basically becoming blind, which requires it to stop periodically to re-evaluate its prey’s(猎物) position.
Our results suggest that time perception offers an as yet unstudied dimension along which animals can specialize and there is considerable range to study this system in more detail.
1.What is the research mentioned in the passage mainly about?
A. Pace of life of animals. B. Time perception of animals.
C. Lifetime of small animals. D. Impressive abilities of animals.
2.What does Kevin Healy’s comment mean in Para. 2?
A. The ability of animals to perceive time depends’ On their high moving speed.
B. The survival of fast moving animals relies on their ability to perceive time.
C. Animals with quicker pace of life have better perception of time.
D. Animals with poor ability of time perception have a shorter life.
3.Why can houseflies avoid being hit?
A. They can think very deeply before they act.
B. They can fly much faster than their eyes can keep up.
C. They can process the information as quickly as they receive it.
D. they can send information to brain more quickly than to their eyes.
4.What will a tiger have to do to catch a moving prey’
A. Try to run as fast as it can.
B. Prevent itself from becoming blind.
C. Slow down to gain its time perception.
D. Stop occasionally to spot the prey again.
高三英语阅读理解中等难度题查看答案及解析
A new study links heavy air pollution from coal burning to shorter lives in northern China. Researchers estimate that the half-billion people alive there in the 1990s will live an average of 5 years less than their southern counterparts because they breathed dirtier air.
China itself made the comparison possible: for decades, a now-discontinued government policy provided free coal for heating, but only in the colder north. Researchers found significant differences in both particulate pollution of the air and life expectancy in the two regions.
While previous studies have found that pollution affects human health, "the deeper and ultimately more important question is the impact on life expectancy," said one of the researchers, Michael Greenstone, a professor of environmental economics at Massachusetts Institute of 一Technology. "This study provides a unique setting to answer the life expectancy question because the(heating) policy dramatically changes pollution concentrations（含量），，，Greenstone said in an email. "Further, due to the low rates of migration in China in this period, we can know people's exposure over long time periods," he said.
The policy gave free coal for fuel boilers to heat homes and offices to cities north of the Huai Riv饥which divides China into north and south. It was in effect for much of the 1950-198,0 period of central planning, and, though discontinued after 1980, it has left a legacy（遗留） in the north of heavy coal burning, which releases particulate pollutants into the air that can harm human health. Researchers found no other government policies that treated China's north differently from the south.
The researchers collected data for 90 cities, from 1981 to 2000, on the annual daily average concentration of total suspended（悬浮的）particulates. In China, those are considered to be particulates that are 100 micrometers or less in diameter, sent out from sources including power stations, construction sites and vehicles. Among them, PM2.5 is of especially great health concern because it can go deep into the lungs.
The researchers estimated the impact on life expectancies using death data from 1991-2000． They found that in the north, the concentration of particulates was 184 micrograms per cubic meter一or 55 percent higher than in the south, and life expectancies were 5.5 years lower on average across all age ranges.
1.The main idea of this passage is that＿·
A. research in China finds air pollution shortened life expectancy
B．the government provided free coal for heating in North China
C．coal burning causes bad air quality across China
D. a new study finds different particulates in South China
2.According to Greenstone,＿greatly contributed to the high pollution concentrations in North China.
A. power stations B. construction sites
C. the free heating policy D. gases from vehicles
3.It is implied in the passage that＿·
A. coal is no longer used for heating in North China
B．air quality was comparatively better in South China
C. southerners burned coals for heating in the 1980s
D．people preferred to live in South China after 1980
4.The underlined word "particulates" most probably means＿．
A. dirty clouds B. particular smoke
C. harmful dust D. dangerous bacteria
高三英语阅读理解中等难度题查看答案及解析
Wealthy people may be likely to be against redistribution of wealth, according to new research. The findings indicate that it is because people use their own neighborhoods and communities as a standard of how much wealth other people have, leading wealthy people to believe the bigger population as being wealthier than it actually is.
“If you're rich, there's good chance for you to know lots of other rich people and relatively few poor people； likewise, if you're poor, you're likely to know fewer wealthy people and more poor ones," says study co-author Robbie Sutton. "Even if people think objectively and follow rules of statistical inference, richer and poorer people may be led by the information available to them, to very different conclusions about how wealthy other people are, on. average, and how wealth is distributed across society. ”
"These results suggest that the rich and poor do not simply have different attitudes to how wealth should be distributed across society； rather, they subjectively experience living in different societies," adds Rael Dawtry, the study's lead author. "In the relatively richer America crowded by wealthier Americans, there is perhaps less need to distribute wealth more equally. " The findings suggest that attitudes toward wealth distribution come from more than just an economic motivation to protect one's self-interest or financially protective political ideologies （意识形态）----the information provided by our living environment also plays an important role.
The research covered over 600 US adults to complete an online survey in two studies. The participants were asked to estimate the distribution of household income for their social contacts and also for the whole US population in two studies—they estimated what percentage of people fell into each one of 11 income groups； then they estimated the average income of people within each income group. Then, the participants were asked how fair they thought income distribution in the US was and how satisfied they were with it. The participants also answered questions testing their attitudes toward redistribution.
To ensure that the findings were actually related to the individual s social circles and not some other psychological bias, the researchers then analyzed data from over 4,000 voters in New Zealand. The data showed that the relationship between voters' income and their perceptions of economic fairness in New Zealand was driven by the level of economic condition in their neighborhood.
"These results show the importance of examining ecological processes, in addition to political ideological or self-interest, for understanding economic preferences, says Dawtry. "Attitudes to redistribution and the economic position appear to be subject to informational biases in the environment as well as biases in the mind. " According to Sutton, the findings may also help to explain the political polarization （两极分化）observed in countries like the United States.
"As richer and poorer people increasingly live separated live, the information available becomes increasingly misunderstood, and increasingly different, he notes. "People are, effectively, living in an informational bubble, surrounded by people with incomes like theirs but unlike many other Americans."
1.What's the reason for incorrect conclusions on others' wealth?
A.The objective thoughts.
B.The improper information.
C.Disobeying rules of statistics.
D.The balance of wealth distribution.
2.What causes the difference in people's attitudes to wealth distribution?
A.Subjective judgment to societies they live in.
B.The biases against political ideologies.
C.The change of the surrounding environment.
D.Dissatisfying protection of self-interest.
3.What's the benefit of the research according to Sutton?
A.Making us understand economic preferences.
B.Giving us an explanation of the political polarization.
C.Making us consider political ideologies or self-interest.
D.Influencing our attitudes to wealth redistribution.
4.What's the title of the passage?
A.Wealthy People Are More Likely To Support Wealth Redistribution
B.Wealthy People Are More Likely To Have Right Information On Wealth
C.Having Wealthy Neighbors Keeps Beliefs On Overall Wealth Distribution
D.Having Wealthy Neighbors Misleads Beliefs On Overall Wealth Distribution
高三英语阅读理解困难题查看答案及解析
Anger is good for you, as long as you control it, according to new psychology research. A new study from Carnegie Mellon University shows anger may help people reduce the negative impacts of stress and help you become healthier.
“Here getting emotional is not bad for you if you look at the case of anger,” said Jennifer Lerner of Carnegie Mellon. “The more people display anger, the lower their stress responses.”
Lerner studied 92 UCLA students by asking them to count back from 6,200. They must say out loud every thirteenth number. Researchers disturbed them by asking them to count faster or ask them other questions. If they made any mistakes, they had to restart from the very beginning. Many students felt depressed about making so many mistakes or got angry.
Lerner used a hidden video camera and recorded all their facial expressions during the test. The researchers describe their reactions as fear, anger and disgust.
Other researchers recorded the students’ blood pressure, pulse and production of a high-stress hormone（荷尔蒙）called cortisol. People whose faces showed more fear during the experiment had higher blood pressure and higher levels of the hormone. Both can have lasting effects such as diabetes（糖尿病）, heart disease, depression and extra weight gain.
When people feel fear, negative impacts increase, but when they get angry, those negatives go down, according to the study.
“Having that sense of anger leads people to actually feel some power in what otherwise is a maddening（令人发狂的）situation,” Lerner said.
Lerner previously studied Americans’ emotional response to the 9/11 terrorist attacks two months after the incident. She found people who reacted with anger were more optimistic. These people are healthier compared with those who were frightened during the event. So in maddening situations, anger is not a bad thing to have. It’s a healthier response than fear.
1.What is the story mainly about?
| A．The findings of new psychology research. |
| B．What you can do with anger in certain cases. |
| C．Different effects produced by anger and fear. |
| D．Healthier responses in maddening situations. |
2.Which statement will Jennifer Lerner agree with?
| A．It’s better to be angry than to be frightened. |
| B．Different reactions reflect different outlooks on life. |
| C．Don’t control your anger and it makes you powerful. |
| D．Pessimistic people are generally healthier than optimistic people. |
3. What does the underlined word “both” refer to according to the passage?
| A．Fear and anger. | B．Blood pressure and pulse. |
| C．Blood pressure and cortiso1. | |
| D．Higher blood pressure and higher levels of the hormone. |
4.In what ways can anger be beneficial to people?
| A．By showing their optimistic side. | B．By reducing their stress. |
| C．By reducing high blood pressure. | D．By taking the place of fear. |
5.The researchers irritated（激怒）the students by __________.
| A．recording their performance secretly |
| B．asking them to count to 6, 200 again and again |
| C．disturbing them and making them start all over again |
| D．criticizing them when they made mistakes |
高三英语阅读理解困难题查看答案及解析
Anger is good for you, as long as you control it, according to new psychology research. A new study from Carnegie Mellon University shows anger may help people reduce the negative impacts of stress and help you become healthier.
“Here getting emotional is not bad for you if you look at the case of anger,” said Jennifer Lerner of Carnegie Mellon. “The more people display anger, the lower their stress responses.”
Lerner studied 92 UCLA students by asking them to count back from 6,200. They must say out loud every thirteenth number. Researchers disturbed them by asking them to count faster or ask them other questions. If they made any mistakes, they had to restart from the very beginning. Many students felt depressed about making so many mistakes or got angry.
Lerner used a hidden video camera and recorded all their facial expressions during the test. The researchers describe their reactions as fear, anger and disgust.
Other researchers recorded the students’ blood pressure, pulse and production of a high-stress hormone（荷尔蒙）called cortisol. People whose faces showed more fear during the experiment had higher blood pressure and higher levels of the hormone. Both can have lasting effects such as diabetes（糖尿病）, heart disease, depression and extra weight gain.
When people feel fear, negative impacts increase, but when they get angry, those negatives go down, according to the study.
“Having that sense of anger leads people to actually feel some power in what otherwise is a maddening（令人发狂的）situation,” Lerner said.
Lerner previously studied Americans’ emotional response to the 9/11 terrorist attacks two months after the incident. She found people who reacted with anger were more optimistic. These people are healthier compared with those who were frightened during the event. So in maddening situations, anger is not a bad thing to have. It’s a healthier response than fear.
1. What is the story mainly about?
| A．The findings of new psychology research. |
| B．What you can do with anger in certain cases. |
| C．Different effects produced by anger and fear. |
| D．Healthier responses in maddening situations. |
2.Which statement will Jennifer Lerner agree with?
| A．It’s better to be angry than to be frightened. |
| B．Different reactions reflect different outlooks on life. |
| C．Don’t control your anger and it makes you powerful. |
| D．Pessimistic people are generally healthier than optimistic people. |
3.What does the underlined word “both” refer to according to the passage?
| A．Fear and anger. | B．Blood pressure and pulse. |
| C．Blood pressure and cortiso1. | |
| D．Higher blood pressure and higher levels of the hormone. |
4. In what ways can anger be beneficial to people?
| A．By showing their optimistic side. | B．By reducing their stress. |
| C．By reducing high blood pressure. | D．By taking the place of fear. |
5.The researchers irritated（激怒）the students by __________.
| A．recording their performance secretly |
| B．asking them to count to 6, 200 again and again |
| C．disturbing them and making them start all over again |
| D．criticizing them when they made mistakes |
高三英语阅读理解中等难度题查看答案及解析
According to new research from the University of Cambridge in England, sheep are able to recognize human faces from photographs.
The farm animals, who are social and have large brains, were previously known to be able to recognize one another, as well as familiar humans. However, their ability to recognize human faces from photos alone is novel.
The recent study, the results of which were published in the journal Royal Society; Open Science, show the woolly creatures could be trained to recognize still images of human faces, including those of former President Barack Obama and actress Emma Watson.
Initially, the sheep were trained to approach certain images by being given food rewards. Later, they were able to recognize the images for which they had been rewarded. The sheep could even recognize images of faces shown at an angle, though their ability to do so declined by about 15 percent—the same rate at which a human’s ability to perform the same task declines,
“Anyone who has spent time working with sheep will know that they are intelligent and individual animals who are able to recognize their handlers.” said Professor Jenny Morton, who led the Cambridge study. “We’ve shown with our study that sheep have advanced face-recognition abilities, close to those of humans and monkeys.”
Recognizing faces is one of his most important social skills for human beings, and some disorders of the brain, including Huntington’s disease, affect this ability.
“Sheep are long-lived and have brains that are similar in size and complexity to those of some monkeys. That means they can be useful models to help us understand disorders of the brain, such as Huntington’s disease that develop over a long time and affect cognitive (认识的) abilities. Our study gives us another way to monitor how these abilities change.” Morton said.
1.According to the new research, what’s unusual about sheep?
A. They have large brains.
B. They can recognize their owners.
C. They can tell animals from humans.
D. They can recognize human faces from photographs.
2.How did the researchers train the sheep?
A. By giving food rewards.
B. By showing photos of famous people.
C. By guiding them to follow their handlers.
D. By showing photos of humans and monkeys by turns.
3.What can be inferred from the passage?
A. Sheep have a higher face-recognition ability than monkeys.
B. The new discovery is of great benefit to the study of cognitive ability changes.
C. The sheep’s face-recognition ability may prevent some disorders of the brain.
D. The sheep’s face-recognition ability stays the same when shown photos at any angle.
4.What’s the best title of the passage?
A. A Wonderful Scientist
B. The Life of Sheep
C. A New Discovery about Sheep
D. How Sheep Recognize Each Other
高三英语阅读理解中等难度题查看答案及解析
According to new research from the University of Cambridge in England, sheep are able to recognize human faces from photographs.
The farm animals, who are social and have large brains, were previously known to be able to recognize one another, as well as familiar humans. However, their ability to recognize human faces from photos alone is novel.
The recent study, the results of which were published in the journal Royal Society: Open Science, show the woolly creatures could be trained to recognize still images of human faces, including those of former President Barack Obama and actress Emma Watson.
Initially, the sheep were trained to approach certain images by being given food rewards. Later, they were able to recognize the images for which they had been rewarded. The sheep could even recognize images of faces shown at an angle, though their ability to do so declined by about 15 percent — the same rate at which a human’s ability to perform the same task declines.
“Anyone who has spent time working with sheep will know that they are intelligent, individual animals who are able to recognize their handlers,” said Professor Jenny Morton, who led the Cambridge study. “We’ve shown with our study that sheep have advanced face-recognition abilities, comparable with those of humans and monkeys.”
Recognizing faces is one of the most important social skills for human beings, and some disorders of the brain, including Huntington’s disease, affect this ability.
“Sheep are long-lived and have brains that are similar in size and complexity to those of some monkeys. That means they can be useful models to help us understand disorders of the brain, such as Huntington’s disease, that develop over a long time and affect cognitive abilities. Our study gives us another way to monitor how these abilities change,” Morton said.
1.According to the new research, what’s unusual about sheep?
A. They have large brains.
B. They can recognize their owners.
C. They can tell animals from humans.
D. They can recognize human faces from photographs.
2.How did the researchers train the sheep?
A. By guiding them to follow their handlers.
B. By giving food rewards.
C. By showing photos of humans and monkeys by turns.
D. By showing photos of famous people.
3.What can be inferred from the passage?
A. Sheep have a higher face-recognition ability than monkeys.
B. The sheep’s face-recognition ability stays the same when shown photos at any angle.
C. The new discovery is beneficial to the study of cognitive ability changes.
D. The sheep’s face-recognition ability may prevent some disorders of the brain.
4.What’s the best title of the passage?
A. A New discovery about Sheep. B. How Sheep Recognize Each Other.
C. A Wonderful Scientist. D. The Life of Sheep.
高三英语阅读理解中等难度题查看答案及解析