For years,Hagelin has studied what role scents（气味）play in wild birds’ behavior.In 2010,Hagelin heard Jan Straley,a marine biologist,talk about the behavior of whales.Straley mentioned that whales often leap into the air,but nobody knew why.
The mystery interested Hagelin.So Hagelin asked Straley whether they might leap to smell the air—maybe to locate food or look for danger.Straley replied that it was an interesting idea but there wasn't much evidence that whales have a sense of smell.To investigate the idea further,the two scientists teamed up.
In the summer of 2011,they set up a post on the coast of southern Alaska.The researchers spent hours monitoring the direction of the whales and of the wind.The whales headed into the wind half of the time.This didn't prove that whales leap to smell,but it suggested that it is possible.
Meanwhile,other researchers in Alaska were studying a region of the brain called the olfactory bulb（嗅觉球）in whales.Olfaction means the ability to smell.Humans also process smells in the olfactory bulb.
In identifying a scent,you might think the nose does all of the work.However,the major role of a nose is to draw chemicals on the air and pass them across sensing cells.As chemicals come into contact,they give signals that travel directly to the bulb and then in the brain for further interpretation.
The researchers discovered that the bulb in a whale was more complex than the one in a human.In whales,this smell-processing center takes up a share of the brain six times larger than it does in humans.
The brain research suggested that whales probably can smell just as well as people—and possibly better than humans can.It is supposed that a good sense of smell could help them find food more easily.
However,Hagelin is not sure of that.Now he is planning a new study that will examine whether whales do use the sense of smell to find food.
1.Hagelin and Straley set up a post with the purpose of finding______.
A. how whales look for food in groups
B. whether whales can get out of danger
C. how whales head into the wind
D. whether whales leap to smell the air
2.We can learn from the text that the olfactory bulb in a whale______.
A. is smaller than the one in a human
B. draws chemicals spreading in the air
C. is more complex than the one in a human
D. processes smells better than the one in a human
3.It is implied in the text that Hagelin______.
A. hasn't got any evidence that whales have a sense of smell so far
B. doesn't know whether whales hunt their food in groups
C. isn't sure that the sense of smell can help whales find food
D. isn't sure whether humans can smell as well as whales
4.In which section of a newspaper can we read this text?
A. Education. B. Science.
C. Culture. D. Agriculture.
高三英语阅读理解中等难度题
For years,Hagelin has studied what role scents（气味）play in wild birds’ behavior.In 2010,Hagelin heard Jan Straley,a marine biologist,talk about the behavior of whales.Straley mentioned that whales often leap into the air,but nobody knew why.
The mystery interested Hagelin.So Hagelin asked Straley whether they might leap to smell the air—maybe to locate food or look for danger.Straley replied that it was an interesting idea but there wasn't much evidence that whales have a sense of smell.To investigate the idea further,the two scientists teamed up.
In the summer of 2011,they set up a post on the coast of southern Alaska.The researchers spent hours monitoring the direction of the whales and of the wind.The whales headed into the wind half of the time.This didn't prove that whales leap to smell,but it suggested that it is possible.
Meanwhile,other researchers in Alaska were studying a region of the brain called the olfactory bulb（嗅觉球）in whales.Olfaction means the ability to smell.Humans also process smells in the olfactory bulb.
In identifying a scent,you might think the nose does all of the work.However,the major role of a nose is to draw chemicals on the air and pass them across sensing cells.As chemicals come into contact,they give signals that travel directly to the bulb and then in the brain for further interpretation.
The researchers discovered that the bulb in a whale was more complex than the one in a human.In whales,this smell-processing center takes up a share of the brain six times larger than it does in humans.
The brain research suggested that whales probably can smell just as well as people—and possibly better than humans can.It is supposed that a good sense of smell could help them find food more easily.
However,Hagelin is not sure of that.Now he is planning a new study that will examine whether whales do use the sense of smell to find food.
1.Hagelin and Straley set up a post with the purpose of finding______.
A. how whales look for food in groups
B. whether whales can get out of danger
C. how whales head into the wind
D. whether whales leap to smell the air
2.We can learn from the text that the olfactory bulb in a whale______.
A. is smaller than the one in a human
B. draws chemicals spreading in the air
C. is more complex than the one in a human
D. processes smells better than the one in a human
3.It is implied in the text that Hagelin______.
A. hasn't got any evidence that whales have a sense of smell so far
B. doesn't know whether whales hunt their food in groups
C. isn't sure that the sense of smell can help whales find food
D. isn't sure whether humans can smell as well as whales
4.In which section of a newspaper can we read this text?
A. Education. B. Science.
C. Culture. D. Agriculture.
高三英语阅读理解中等难度题查看答案及解析
The science of computer, rapid progress has been made in recent years，plays a very important role in our daily life．
A. from which B. in which
C. with which D. to which
高三英语单项填空困难题查看答案及解析
Anew international study shows that some peopled biological clock plays a powerful role for their life expectancy, regardless of lifestyle choices.
Published in the latest issue of Aging on Wednesday, the study has found the most definitive evidence to explain why some people keep healthy lifestyle but die younger than others.
Geneticist Steve Horvath from the University of California, Los Angeles (UCLA), led a team of 65 scientists around the world to record age-related changes to human DNA, analyse blood samples collected from 13,000 people and estimate their lifespan.
A higher biological age, regardless of actual age, consistently predicts an earlier death, the study says.
“You get people who are vegan, sleep 10 hours a day, have a low-stress job, and still end up dying young,” Horvath said in a statement. “We have shown some people have a faster innate aging rate.”
The findings discovered that 5 percent of the population ages at a faster biological rate, which translated to a roughly 50 percent higher than average risk of death at any age.
“The great hope is that we find anti-aging interventions that would slow your innate aging rate,” Horvath said, adding that “this is an important milestone to realizing this dream.
1.How was the study conducted?
A. By collecting and analyzing data
B. By interviewing lots of people
C. By researching previous studies
D. By studying different lifestyles
2.Some people keep healthy lifestyle but die younger than others because .
A. By biological clock is not powerful enough
B. the most definitive evidence has been found
C. they have a higher actual age than others
D. they ages at a relatively faster biological rate
3.According to the study, it can be inferred that .
A. people who keep healthy lifestyle tend to live longer
B. people’s lifespan can be predicted by their age
C. anti-aging interventions have proved to slow the innate aging rate
D. 5 percent of people are believed to have a faster innate aging rate
高三英语阅读理解中等难度题查看答案及解析
A new international study shows that some peopled biological clock plays a powerful role for their life expectancy, regardless of lifestyle choices.
Published in the latest issue of Aging on Wednesday, the study has found the most definitive evidence to explain why some people keep healthy lifestyle but die younger than others.
Geneticist Steve Horvath from the University of California, Los Angeles (UCLA), led a team of 65 scientists around the world to record age-related changes to human DNA, analyse blood samples collected from 13,000 people and estimate their lifespan.
A higher biological age, regardless of actual age, consistently predicts an earlier death, the study says.
“You get people who are vegan, sleep 10 hours a day, have a low-stress job, and still end up dying young,” Horvath said in a statement. “We have shown some people have a faster innate aging rate.”
The findings discovered that 5 percent of the population ages at a faster biological rate, which translated to a roughly 50 percent higher than average risk of death at any age.
“The great hope is that we find anti-aging interventions that would slow your innate aging rate,” Horvath said, adding that “this is an important milestone to realizing this dream.
1.How was the study conducted?
A.By collecting and analyzing data
B.By interviewing lots of people
C.By researching previous studies
D.By studying different lifestyles
2.Some people keep healthy lifestyle but die younger than others because .
A.the biological clock is not powerful enough
B.the most definitive evidence has been found
C.they have a higher actual age than others
D.they ages at a relatively faster biological rate
3.According to the study, it can be inferred that .
A.people who keep healthy lifestyle tend to live longer
B.people’s lifespan can be predicted by their age
C.anti-aging interventions have proved to slow the innate aging rate
D.5 percent of people are believed to have a faster innate aging rate
高三英语阅读理解中等难度题查看答案及解析
A new international study shows that some people's biological clock plays a powerful role for their life expectancy, regardless of lifestyle choices.
Published in the latest issue of Aging on Wednesday, the study has found the most definitive evidence to explain why some people keep healthy lifestyle but die younger than others.
Geneticist Steve Horvath from the University of California, Los Angeles (UCLA), led a team of 65 scientists around the world to record age-related changes to human DNA, analyse blood samples collected from 13, 000 people and estimate their lifespan.
A higher biological age, regardless of actual age, consistently predicts an earlier death, the study says.
"You get people who are vegan, sleep 10 hours a day, have a low-stress job, and still end up dying young," Horvath said in a statement. "We have shown some people have a faster innate aging rate."
The findings discovered that 5 percent of the population ages at a faster biological rate, which translated to a roughly 50 percent higher than average risk of death at any age.
"The great hope is that we find anti-aging interventions that would slow your innate aging rate," Horvath said, adding that "this is an important milestone to realizing this dream."
1.Some people keep healthy lifestyle but die younger than others because ________.
A. their biological clock is not powerful enough
B. the most definitive evidence has been found
C. they have a higher actual age than others
D. they ages at a relatively faster biological rate
2.How was the study conducted?
A. By collecting and analyzing data.
B. By interviewing lots of people.
C. By researching previous studies.
D. By studying different lifestyles.
3.According to the study, it can be inferred that ________.
A. people who keep healthy lifestyle tend to live longer
B. people’s lifespan can be predicted by their age
C. 5 percent of people are believed to have a faster innate aging rate
D. anti-aging interventions have proved to slow the innate aging rate
4.Which of the following would be the best title for the passage?
A. We all should keep healthy lifestyle
B. Geneticist finds anti-aging interventions
C. Biological clock predicts life expectancy
D. Horvath builds an important milestone
高三英语阅读理解中等难度题查看答案及解析
29．What has been studied suggest that a short nap in the afternoon_______you refreshed for the next four or five hours.
| A．will leave | B．leaves | C．must leave | D．should leave |
高三英语单项填空简单题查看答案及解析
The private automobile (私家车) has long played an important role in the United States. In fact, it has become a necessary and important part of the American way of life. In 1986, 69% of American families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid transportation, the automobile has freed them from having to live near their place of work. This has encouraged the growth of the cities, but it has also led to traffic problems.
For farm families the automobile is very helpful. It has made it possible for them to travel to town very often for business and for pleasure, and also to transport their children to distant schools.
Family life has been affected in various ways, The car helps to keep families together when it is used for picnics, outings, and other shared experiences. However, when teenage children have the use of the car, their parents can't keep an eye on them. There is a great danger if the driver has been drinking alcohol or taking drugs, or showing off by speeding or breaking down traffic laws. Mothers of victims (受害者) of such accidents have formed an organization called MADD (Mothers Against Drunk Driving). These women want to prevent further tragedies. They have worked to encourage the government to limit the youngest drinking age. Students have formed a similar organization, SADD (Students Against Drunk Driving) and are spreading the same message among their friends.
For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.
1.Which of the following is NOT mentioned in the text?
A. Cars have encouraged the growth of the cities.
B. Cars can bring families together when they go for picnics.
C. Cars have enabled people to live far from their place of work.
D. Cars help city families to transport their children to faraway schools.
2.What has been done to deal with the problem of drunk driving?
A. Patents have paid more attention to their children.
B. Some organizations have been set up against drunk driving.
C. Mothers have tried to persuade their children not to drink alcohol.
D. University students have asked the government to solve the problem.
3.We can infer from the text that ____________ in America.
A. it will be more difficult for people to get new cars
B. parents will not allow their children to have their own cars
C. the government will encourage people to use public transportation
D. cars will still be popular though they have caused many problems
高三英语阅读理解中等难度题查看答案及解析
The private automobile(私家车) has long played an important role in the United States. In fact, it has become a necessary and important part of the American way of life. In 1986, sixty-nine percent of American families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid transportation, the automobile has freed them from having to live near their place of work. This has encouraged the growth of the cities, but it has also led to traffic problems.
For farm families the automobile is very helpful. It has made it possible for them to travel to town very often for business and for pleasure, and also to transport their children to distant schools.
Family life has been affected(影响) in various ways. The car helps to keep families together when it is used for picnics, outings, and other shared experiences. However, when teenage children have the use of the car, their parents can’t keep an eye on them. There is a great danger if the driver has been drinking alcohol or taking drugs, or showing off by speeding or breaking down traffic laws. Mothers of victims(受害者) of such accidents have formed an organization called MADD(Mothers Against Drunk Driving). These women want to prevent further tragedies(悲剧). They have worked to encourage the government to limit the youngest drinking age. Students have formed a similar organization, SADD(Students Against Drunk Driving) and are spreading the same message among their friends.
For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.
1.Which of the following is NOT mentioned in the text?
A. Cars have encouraged the growth of the cities.
B. Cars can bring families together when they go for picnics.
C. Cars have enabled people to live far from their place of work.
D. Cars help city families to transport their children to faraway schools.
2.What has been done to deal with the problem of drunk driving?
A. Parents have paid more attention to their children.
B. Some organizations have been set up against drunk driving.
C. Mothers have tried to persuade their children not to drink alcohol.
D. University students have asked the government to solve the problem.
3.We can infer from the text that in America.
A. it will be more difficult for people to get new cars
B. parents will not allow their children to have their own cars
C. the government will encourage people to use public transportation
D. cars will still be popular though they have caused many problems
高三英语阅读理解简单题查看答案及解析
—I think everyone has a role to play in making the planet a better place.
—Yes, indeed. ______.
A. I’m with you on that B. That couldn’t be better
C. You have got something D. I’ll do my best
高三英语单项填空简单题查看答案及解析
—I think everyone has a role to play in making the planet a better place.
—Yes, indeed. ______.
A. I’m with you on that B. That couldn’t be better
C. You have got something D. I’ll do my best
高三英语单项填空中等难度题查看答案及解析