A study shows a worrying tendency that the window for saving the worlds coral reefs from the effects of global warming____.
A. was being rapidly closed B. will be rapidly closed
C. has rapidly closed D. is rapidly closing
高三英语单项填空中等难度题
A study shows a worrying tendency that the window for saving the worlds coral reefs from the effects of global warming____.
A. was being rapidly closed B. will be rapidly closed
C. has rapidly closed D. is rapidly closing
高三英语单项填空中等难度题查看答案及解析
A new pollen (花粉) study showed that drought was responsible for the extinction of civilizations more than 3,000 years ago during the Bronze Age.
The reason behind why the civilizations in and around modern-day Israel suddenly broke down more than 3,000 years ago has remained a mystery up until now. A new pollen study by Tel Aviv University researchers finally solved this Bronze Age mystery.
Prof. Israel Finkelstein showed that owing to serious climate changes, the entire world of the Bronze Age crumbled in a short period of time. The discovery was made on the basis of a high-resolution analysis of pollen grains taken from sediments (沉淀物) beneath the Sea of Galilee and the western shore of the Dead Sea.
Prof. Finkelstein received support from the European Research Council to conduct research aimed at reconstructing ancient Israel. Researchers of the part of the project that dealt with climate change extracted (提取) about 60 feet of samples of gray muddy sediment from the center of the Sea of Galilee in northern Israel. They had to drill through 1,000 feet of water and into 65 feet of the lake bed and were able to recover evidence dating over the past 9,000 years.
“Pollen is the most enduring organic material in nature,” explained Dr. Dafna Langgut, a pollen researcher who carried out the actual work of sampling. “These grains tell us about the plants that grew near the lake in the past and therefore prove the climatic conditions in the region.”
Researchers noted a sharp decrease in Mediterranean trees like oaks and pines in the Late Bronze Age. According to study experts, this could be because of repeated periods of drought. The droughts may have resulted in long famines, forcing people to migrate from north to south.
1.The underlined word “crumbled” in Paragraph 3 means _____.
A. settled B. changed
C. established D. disappeared
2.Prof. Finkelstein conducted the new pollen study to _____.
A. earn some money
B. recreate ancient Israel
C. learn more about local plants
D. discover the ancient civilizations
3.By conducting the study, scientists found _____.
A. Mediterranean trees were rare in the Early Bronze Age
B. climate change was to blame for the lost civilization
C. people in the Late Bronze Age starved to death
D. droughts were rare during the Bronze Age
4.The text is most probably taken from _____.
A. a travel magazine B. a history textbook
C. a newspaper report D. an agricultural book
高三英语阅读理解中等难度题查看答案及解析
There’s more evidence that what’s good for your heart is good for your head．A new study shows that people who run，swim or do other moderate intensity(中等强度的)exercise have brains that look，on average，10 years younger than the brains of couch potatoes．
“Our study showed that for older people，getting moderate intensity exercise may be protective，helping them keep their brains work better，”said Dr．Clinton Wright of the University．Of Miami，who led the study．But it’s not necessarily easy．Walking，golf，bowling and yoga didn’t count，and people need to start before they begin showing memory loss，Wright’s team reported in the journal Neurology．
The study of nearly 900 people who exercise regularly showed that 90 percent fell into the low-intensity group．These people are part of a larger group taking part in a bigger study called Northern Manhattan Study．They were asked how long and how often they exercised during the past two weeks．Five years later，they were tested for memory and thinking skills and got a brain MRI．Seven years after that，they took the memory and thinking tests again．The 10 percent who said they took part in moderate intensity exercise scored better on the tests．These included running，climbing，swimming，riding bicycles and so on．
“We found that those with moderate heavy activity had higher scores and slower decline than inactive patients when comparing the results，”the study team wrote．
Many studies have shown that exercise may not prevent Alzheimer’s but may delay it．The findings fit in with a study that found two years of exercising，eating healthier food and brain training can promote people’s memory function．
1.According to the study，moderate heavy exercise________.
A．makes people’s heart better than their heads
B．helps people keep a younger brain
C．makes people ten years younger
D．makes people look like potatoes
2.What’s true about the study?
A．Most people surveyed took low-intensity exercise．
B．Only 900 people took part in the bigger study．
C．High-intensity exercise is better．
D．Ten people scored best on the test．
3.How did the study team come to the conclusion?
A．By observing people exercise．
B．By using examples．
C．By making a comparison．
D．By doing a brain MRI．
4.What’s the best title for this passage?
A．How to keep healthy
B．Ways to make your brain work better
C．To exercise or not
D．Moderate exercise keeps your brain younger
高三英语阅读理解中等难度题查看答案及解析
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
Studies show that Americans chat on their phones for more than five hours a month, _____ Europeans.
| A．as much as twice | B．twice as much as |
| C．as much twice as | D．as twice much as |
高三英语单项填空简单题查看答案及解析
Don’t worry if you can’t come to________ party — I’ll save________ cake for you.
A．the; some B．a; much
C．the; any D．a; little
高三英语单项填空中等难度题查看答案及解析
A new study shows that air pollution can cause a huge reduction in our intelligence. The study was a project involving researchers at Peking University in China and Yale University in the United States.
The researchers reported that long-term exposure to air pollution can affect a person's mental abilities in two areas: Language and math.
The researchers studied about 25,000 people from across China. Between 2010 and 2014, these Chinese men, women and children were given language and math tests. Then researchers compared the test results with measurements of pollution in the air, namely nitrogen dioxide and sulfur dioxide （二氧化硫）.
Xi Chen of the Yale School of Public Health led the study. He and his team found that breathing polluted air can reduce a person's education level by about one year.
Chen said that the effect generally is worse for those over 64 years of age, for men and for those with little or no education.
“The older persons—they are more affected. And we find, quite amazingly, males are more affected than females. And people working outdoors are more affected than people working indoors.
He noted that the youngest people in the study were 10 years old, while the oldest was 90 years old. They came from China's 33 provinces. In his words, the data and facts are convincing and this range of ages and locations across the country provided a real, objective and representative sample.
The researchers noted that the effect of air pollution on verbal ability is even more serious as people age, especially among men and the less educated. The researchers also stressed that every country, whether developed, developing or poor, should focus on air pollution or humans will face a bad situation.
1.What is the result of the study?
A.Air pollution has a bad effect on people's intelligence.
B.Females are more affected by air pollution than males.
C.Americans are more affected by air pollution than Chinese.
D.People working indoors are actually not affected by air pollution.
2.What did Chen say about the study?
A.It is doubtful.
B.It is extremely unfair.
C.It is common and not representative.
D.It is relatively objective and persuasive.
3.What did the researchers emphasize in the last paragraph?
A.The data from the 33 provinces is convincing.
B.The whole world should pay attention to air pollution.
C.The less educated take more responsibility for air pollution.
D.Air pollution's influence on verbal ability is less serious as people age.
4.Where is the text most likely taken from?
A.A life diary. B.A guidebook.
C.A science magazine. D.A biography.
高三英语阅读理解中等难度题查看答案及解析
The study, published today in the journal PLOS Biology shows that the average body size and number of sharks and other marine predators—vital to maintaining healthy ocean ecosystems—fell significantly near cities with more than 10,000 people and associated fishing boats.
The minimum distance from people and fishing which had no measurable effect was 1,250 kilometers. This is far further than previous studies have suggested and probably reflects the increased distances fishing boats can now travel. As a result, sharks were only observed at 12% of sites monitored.
Lead author Dr. Tom Letessier said, ''Human activity is now the biggest influence on sharks' distribution. Just 13% of the world's oceans can be considered 'wilderness' but sharks and other predators are much more common and significantly larger at distances greater than 1,250 kilometers from people. This suggests that large marine predators are generally unable to thrive near to people and is another clear example of the impact of human overuse on our seas. ''
To collect their data, the team analyzed videos taken at 1,041 sites across the Indian and Pacific Oceans, selected to test the biggest possible range of conditions and habitats. Sharks and other free-swimming predators were studied using cameras attached cannisters(炮筒)filled with bait. In total, the team recorded 23,200 animals representing 109 species. These included 841 individual sharks from 19 different species.
Dr. Letessier added, ''Our study also found that shallower water environment, of depths less than 500 meters, were vital for marine predator diversity. We therefore need to identify sites that are both shallow and remote and protect them. However, there are still numerous shallow hot spots near human markets that are not appropriately protected, and this must change. ''
1.According to the study, what happened to sharks and other marine predators?
A.They became less important for keeping healthy ocean ecosystems.
B.They only lived near cities with 10,000 people.
C.They loved swimming after fishing boats.
D.Their average body size and number decreased sharply.
2.Which of the following statements may Dr. Tom Letessier agree with?
A.Large marine predators can grow well near people.
B.People shouldn't disturb the sea and sea animals.
C.Sharks’ distribution was mainly affected by human activity.
D.Other ecological factors have no impact on sharks’ distribution.
3.What does the author intend to do in Paragraph 4?
A.Introduce a new topic for readers.
B.Introduce the study means used by the team.
C.Summarize the previous paragraphs.
D.Collect data about sharks and other predators.
4.What can we infer about the perfect environment for marine predator diversity?
A.It should be deeper than 500 meters.
B.It should be spots that are hot enough.
C.It should be shallower and away from humans.
D.It should be spots changed from human markets.
高三英语阅读理解中等难度题查看答案及解析