A new study has found the amount of antibiotics（抗生素）given to farm animals is expected to increase by two-thirds over the next 15 years.Researchers are linking the growing dependence on the drugs to the increasing need for meat,milk and eggs.However,the drugs could quicken the development of antibiotic-resistant infections（感染）.Such infections are already a major public,health concern in the United States.
The World Health Organization notes when people stop living in poverty（贫困）,the first thing they want to do is eat better,rather than earn more money.For most people,that means their diet should contain more meat.With the rapid development of Asia,people there are eating nearly four times as much meat,milk and other milk products as they did 50 year ago.
To meet the need,farmers have put many animals into smaller spaces.As the animals are crowded together,the easiest way to deal with some of the problems d crowding is to give them antibiotics.It's clear that antibiotics help animals stay healthy in a crowded environment and grow faster.But bacteria can develop resistance to the drugs gradually.
Nowadays,doctors find antibiotics that once worked against the infections no longer work.The bacteria have learned ways to fight against the drugs.The heavy use of antibiotics in animals is responsible for the growth of antibiotic resistance worldwide.In the United States,at least two million people get drug-resistant infections each year and at least 23,000 die from an infection.
Europe has banned the use of antibiotics to increase animal growth.And the United States is hoping to persuade farmers to stop using antibiotics for that purpose.
1.What accounts for the increasing amount of antibiotics given to farm animals?
A. The desire for new drugs. B. The less effective antibiotics.
C. The outdated farm technology. D. The need for more various foods.
2.What do most people want to do first when they get rid of poverty according to the WHO?
A. Making a lot of money. B. Focusing more on health.
C. Having more meat in their diet. D. Living in a better environment.
3.What can be inferred from the passage?
A. Antibiotics do harm to animals.
B. Antibiotics help animals stay healthy.
C. Antibiotics are used heavily in Europe.
D. Antibiotic-resistant bacteria spread to people.
4.What's the passage mainly about?
A. A new way of raising farm animals.
B. The advantages of using antibiotics.
C. The reason for banning the use of antibiotics.
D. The negative effect of antibiotics in farm animals.
高三英语阅读理解中等难度题
A new study has found the amount of antibiotics（抗生素）given to farm animals is expected to increase by two-thirds over the next 15 years.Researchers are linking the growing dependence on the drugs to the increasing need for meat,milk and eggs.However,the drugs could quicken the development of antibiotic-resistant infections（感染）.Such infections are already a major public,health concern in the United States.
The World Health Organization notes when people stop living in poverty（贫困）,the first thing they want to do is eat better,rather than earn more money.For most people,that means their diet should contain more meat.With the rapid development of Asia,people there are eating nearly four times as much meat,milk and other milk products as they did 50 year ago.
To meet the need,farmers have put many animals into smaller spaces.As the animals are crowded together,the easiest way to deal with some of the problems d crowding is to give them antibiotics.It's clear that antibiotics help animals stay healthy in a crowded environment and grow faster.But bacteria can develop resistance to the drugs gradually.
Nowadays,doctors find antibiotics that once worked against the infections no longer work.The bacteria have learned ways to fight against the drugs.The heavy use of antibiotics in animals is responsible for the growth of antibiotic resistance worldwide.In the United States,at least two million people get drug-resistant infections each year and at least 23,000 die from an infection.
Europe has banned the use of antibiotics to increase animal growth.And the United States is hoping to persuade farmers to stop using antibiotics for that purpose.
1.What accounts for the increasing amount of antibiotics given to farm animals?
A. The desire for new drugs. B. The less effective antibiotics.
C. The outdated farm technology. D. The need for more various foods.
2.What do most people want to do first when they get rid of poverty according to the WHO?
A. Making a lot of money. B. Focusing more on health.
C. Having more meat in their diet. D. Living in a better environment.
3.What can be inferred from the passage?
A. Antibiotics do harm to animals.
B. Antibiotics help animals stay healthy.
C. Antibiotics are used heavily in Europe.
D. Antibiotic-resistant bacteria spread to people.
4.What's the passage mainly about?
A. A new way of raising farm animals.
B. The advantages of using antibiotics.
C. The reason for banning the use of antibiotics.
D. The negative effect of antibiotics in farm animals.
高三英语阅读理解中等难度题查看答案及解析
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence(发生率)faster than any other cancer in the United States.
But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer—people with fair skin and freckles(雀斑), for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
1.The underlined word “flaws” in the 2nd paragraph most probably means .
A. evidences B. facts C. faults D. failures
2.People with fair skin and freckles .
A. seldom use sunscreen
B. are more in danger of skin cancer
C. can be free from the harm of the sun
D. often expose themselves to the sun
3.We can learn from the passage that .
A. sunscreen users get skin cancer more often
B. the volunteers have proved the effect of sunscreen
C. the new study was based on the experiences of volunteers
D. the number of skin cancer patients is increasing in America
4.Which of the following can be the best title for this passage?
A. Sunscreen to Prevent Skin Cancer
B. Sunscreen to Increase Skin Cancer
C. Skin Cancer Caused by Sunscreen
D. Skin Cancer Caused by Freckles
高三英语阅读理解中等难度题查看答案及解析
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin caner, actually increases the risk.
Researchers from the University of lows based their firdings on a review of 18 earlier studies that looked at the associstion between sunscreen use and melanoms(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helpsprevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin concer—people with fair skin and freckles （雀斑）,for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
1.The underlined word “flaws” in the 2nd paragraph most probably means ________.
A.evidences B.facts C.faults D.failures
2.People with fair skin and freckles ________.
A.seldom use sunscreen B. are more in danger of skin concer
C. can be free from the harm of the sun D. often expose themselves to the sun
3.We can learn from the passage that ________.
A. sunscreen users get skin cancer more often
B. the volunteers have proved the effect of sunscreen
C. the new study was based on the experiences of volunteers
D. the number of skin cancer patients is increasing in America
4.Which of the following can be the beat title for this passage?
A. Sunscreen to Prevent Skin Cancer B. Sunscreen to Increase Skin Cancer
C. Skin Cancer Caused by Sunscreen D. Skin Cancer Caused by Freckles
高三英语阅读理解中等难度题查看答案及解析
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤)．They said that they found faults in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions has been raised about sunscreen and whether it may has opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer--- people with fair skin and freckles (雀斑), for example--- are more likely to use sunscreen．As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
1.People with fair skin and freckles________.
| A．seldom use sunscreen |
| B．are more in danger of skin cancer |
| C．can be free from the harm of the sun |
| D．often expose themselves to the sun |
2.We can learn from the passage that________.
| A．sunscreen users get skin cancer more often |
| B．the volunteers have proved the effect of sunscreen |
| C．the new study was based on the experiences of volunteers |
| D．the number of skin cancer patients is increasing in America |
3.Which of the following can be the best title for this passage?
| A．Sunscreen to Prevent Skin Cancer |
| B．Sunscreen to Increase Skin Cancer |
| C．Skin Cancer Caused by Sunscreen |
| D．Skin Cancer Caused by Freckles |
高三英语阅读理解中等难度题查看答案及解析
A new study has found that social media could be affecting the sleep of young adults.
The study is a project of researchers at the University of Pittsburgh's School of Medicine. They found that young people who often use social media are more likely to suffer from sleep disorders than those who use social media less. The researchers say doctors should ask young adults about their use of social media when treating sleep issues.
“This is one of the first pieces of evidence that social media use really can influence your sleep.” said Jessica C Levenson. She was the lead author of a report on the study.
The researchers set out to examine the connection between social media use and sleep among young adults. Levenson noted that these young adults are possibly the first “generation to grow up with social media.”
The researchers wanted to find out how often young people used social media sites like Facebook, Twitter, Credit and Tumbler. For the study, they gave questionnaires to nearly 1,800 adults, aged 19 to 32. On average, members of the study group used social media sites one hour a day. They also "visited various social media 30 times per week.”
Thirty percent of the study's participants reported having serious problems with sleeping. Those people who used social media a lot were three times more likely to have a sleep disorder. And those who spent the most time on social media were two times as likely to suffer from sleep disturbances.
Levenson said the number of times a person visits social media is a better predictor of sleep problems than overall time spent on social media. If this is true, she adds, then practices that stop such behaviors may be the most effective.
1.What's the main idea of the text?
A. The researchers focus on social media.
B. The researchers manage to handle sleep problems.
C. Doctors treat young patients.
D. Social media affects sleep.
2.When treating sleep problems, doctors are advised to ________.
A. offer some advice about giving up social media
B. ask the patients about young adults’ use of social media
C. give young adults some medicine
D. ask about the patients' living conditions
3.How did the researchers mainly carry out the study?
A. By doing online research. B. By giving an example.
C. By collecting published data. D. By doing questionnaires.
4.What can be inferred from the text?
A. Men are more likely to suffer from a sleep disorder than women.
B. People often using social media are less likely to have a sleep disorder.
C. Using computers less helps avoid sleep problems completely.
D. Sleep problems can be determined by the times of a person visiting social media.
高三英语阅读理解中等难度题查看答案及解析
A new study has found that it may be possible to train people to be more intelligent，increasing the brainpower they had at birth.
Until now，it has been widely assumed that the kind of mental ability that allows us to solve new problems without having any relevant previous experience—what psychologists call fluid intelligence—is innate and cannot be taught（though people can raise their grades on tests of it by practicing）.
But in the new study，researchers describe a method for improving this skill，along with experiments to prove it works.
The key, researchers found, was carefully structured training in working memory—the kind that allows memorization of a telephone number just long enough to dial it. This type of memory is closely related to fluid intelligence，so the researchers reasoned that improving it might lead to improvements in fluid intelligence.
First they measured fluid intelligence of volunteers using standard tests. Then they trained each in a complicated memory task—the child’s card game，in which they had to recall a card they saw and heard. During the course, they needed to ignore irrelevant items，monitor ongoing performance，manage two tasks at the same time and connect related items to one another in space and time.
The four groups experienced a half-hour of training daily for 8，12，17 and 19 days，respectively. To make sure they were not just improving their test-taking skills，the researchers compared them with control groups that took the tests without the training.
The results, published Monday in The Proceedings of the National Academy of Sciences，were striking. Improvement in the trained groups was a lot greater. Moreover，the longer they trained, the higher their scores were. All performers，from the weakest to the strongest，showed significant improvement.
“Our results show you can increase your intelligence with proper training.”said Dr Jaeggi, a co-author of the paper.“No one knows how long the gains will last after training stops，”he added，“and the experiment’s design did not allow the researchers to determine whether more training would continue to produce further gains.”
67．The researchers thought the key to improving the intelligence was ______________.
A．memorizing telephone numbers
B．improving working memory
C．training in concentration
D．recalling a card
68．The following aspects of the training help increase intelligence EXCEPT___________.
A．ignoring irrelevant items
B．monitoring ongoing performance
C．managing two tasks at the same time
D．using previous experience
69．When the experiment was conducted，the researchers______________.
A．trained the four groups for the same period of time
B．only made comparisons between the four groups
C．compared the four groups with control groups
D．trained the four groups together
70．By writing the article，the writer intends to ______________.
A．inform the readers of a new study
B．call on people to be trained to increase intelligence
C．prove one’s born brainpower can be improved
D．tell people the improved intelligence will last forever
高三英语阅读理解简单题查看答案及解析
E-cigarettes lead to as many lung diseases as tobacco products, a new study has found. The report from the University of North Carolina at Chapel Hill compared saliva (唾液) samples from tobacco smokers, e-cigarette smokers and nonsmokers. Researchers found that e-cigarette smokers were likely to develop dangerous proteins associated with lung diseases. The study adds to a growing body of evidence proving that e-cigarettes might not be the perfect alternative smokers addicted to tobacco are looking for.
Last year a Surgeon General’s report claimed that the use of e-cigarettes among a certain group of people jumped 900 percent from 2011 to 2015 and more studies were carried out to research their side effects. That same year, the FDA put e-cigarettes in the tobacco products the administration monitors.
Previous research from UCLA has proven that e-cigarettes can cause lifelong damage to one’s heart, and that one puff (吸一口烟) of an e-cigarette is all it takes to increase one’s risk of having a heart attack. For the new study UNC researchers observed 15 e-cigarette users, 14 cigarette smokers and 15 nonsmokers. The study revealed that e-cigarette smokers have raised levels of NET-related proteins in their airways, the increased levels of which can lead to lung illnesses, making it difficult for patients to breathe.
Study author Dr Mehmet Keismer said, “There is confusion about whether e-cigarettes are ‘safer’ than cigarettes because the potential adverse effects of e-cigarettes are only beginning to be studied. Our results suggest that e-cigarettes might be just as bad as cigarettes.” Dr Keismer also stressed that e-cigarettes come with their own harmful risks along with those linked to tobacco, which challenges the concept that switching from cigarettes to e-cigarettes is a healthier alternative.
A citizen named Dyclna said, “The e-cigarettes probably make you cough less, but nobody gives a warning about your lungs. For producers, it’s just a money thing — it’s just about getting profits from it. The problem is that our government just stands there with its hands behind the back.”
1.Why did the FDA list e-cigarettes into monitored products?
A.It might realize the harm of them.
B.It wanted to improve their quality.
C.It aimed to reduce their illegal sales.
D.It might be warned by the government.
2.What harm does the increased level of NET do to people?
A.Leading to weight gain. B.Spoiling people’s appetite.
C.Making breathing hard. D.Speeding people’s heartbeat.
3.What does Dyclna mainly want to express?
A.E-cigarettes are safer than regular ones.
B.E-cigarettes can only benefit few people.
C.Producers make a high profit from e-cigarettes.
D.Governments are to blame for e-cigarettes’ consumption.
4.What is the best title for the text?
A.E-cigarettes: A new way of smoking.
B.E-cigarettes: A better way than tobacco?
C.E-cigarettes: The harmful proteins it produces.
D.E-cigarettes: The urgent need of government control.
高三英语阅读理解简单题查看答案及解析
Not until he went abroad to further his study_______ the importance of English.
| A．has he found | B． he has found |
| C．did he find | D． he had found |
高三英语单项填空中等难度题查看答案及解析
［1］A new study has found evidence of aggressive behavior in children who drink four or more servings of soft drinks every day．
［2］The mothers of 3,000 five-year-olds took part in the study．They were asked to keep a record of how many servings of soft drinks their children drank over a two-month period and keep records of how they behaved．The researchers found that 43 percent of the boys and girls drank at least one daily serving of soda．Four percent of the youngsters had four or more sodas to drink every day．
［3］Children who drank the most soda were more than two times likely to show signs of aggression．“For the children who consumed four or more soft drinks per day，we see an association between aggressive behaviors，attention problems and withdrawn behaviors．”Shakira Suglia says．The aggressive behaviors included destroying possessions belonging to others，taking part in fights and physically attacking people．
［4］Shakira says the researchers identified the link after they considered the factors like the child’s age and sex．They also considered ____________，such as whether the boys and girls were eating sweets or given fruit drinks on a normal day．In addition，the researchers examined parenting styles and other social conditions that might be taking place in the home．
［5］It is not quite clear why young children who drink a lot of soda have behavior problems．However,a substance often found in soft drinks is caffeine，which helps to make people feel energetic．Doctor Suglia suggests that caffeine could be causing the children to be more aggressive．
［6］The research is part of a larger study called the Fragile Families and Child Well-being Study．It follows 5．000 poor mothers and their children in 20 American cities．
1．What is the main idea of the text？(no more than l2 words)
2．What does the underlined word“they”in Paragraph 2 probably refer to?(no more than 5 words)
3．List three aggressive behaviors according to the text．(no more than 12 words)
4．Fill in the blank in Paragraph 4 with proper words．(no more than 3 words)
5．Complete the following statement with one word from Paragraph 5．
People will often become _____________ when they have some coffee，in which caffeine is the major chemical．
高三英语信息匹配中等难度题查看答案及解析
A new study has found evidence of aggressive (攻击性的) behavior in children who drink four or more servings of soft drinks every day. Information for the study came from the mothers of 3,000 5-year-olds. Researchers asked the women to keep a record of how many servings of soft drinks their children drank over a two-month period. They were also asked to complete a checklist of their children’s behavior.
The researchers have found that 43 percent of the children drink at least one daily serving of soda, and 4 percent of the youngsters have even four or more sodas to drink every day.
Shakira Suglia, a famous expert, says they’ve found that children who drink the most soda are more than twice as likely as those who drink no soda to show signs of aggression.
“For the children who consume four or more soft drinks per day, we see more withdrawn behaviors, which make them hard to get along well with others.”
The aggressive behaviors include destroying possessions belonging to others, taking part in fights and physically attacking people.
The researchers have determined the link after considering factors like the child’s age and sex. They have also considered other possible influence, such as whether the boys and girls are eating sweets or giving fruit drinks on a normal day. In addition, the researchers have examined parenting styles and other social conditions that may be taking place in the home.
Researches are trying to find why young children who drink a lot of soda have behavior problems. An ingredient often found in soft drinks is caffeine, which helps to make people feel energetic. Doctor Suglia suggests that caffeine could cause the 5-year-olds to be more aggressive. Earlier studies of adults have found the highest sugar levels in those who carry weapons (武器) and show signs of negative social behavior.
1.What section of a newspaper is the passage probably taken from?
A. Scientific Technology B. Science Fictions
C. Social News D. Health Report
2.The underlined word “withdrawn” in paragraph 4 can probably be replaced by the word ______.
A. backward B. unsocial C. generous D. friendly
3.Researchers studied the following aspects of the children except ______.
A. age B. sex C. games D. parents
4.According to the research, which of the following is right?
A. Mothers were asked to keep a record of how many servings of soft drinks their children drank over a three-month period.
B. 4 percent of the youngsters have even four or fewer sodas to drink every day.
C. Children who drink no soda show fewer aggressive behaviors.
D. Children with the highest sugar levels tend to carry weapons and show signs of negative social behavior.
5.After a further study on ingredients in soda, Shakira Suglia implies that the direct cause of the aggressive behaviors may be ______.
A. soft drinks B. attention problems
C. caffeine D. social conditions
高三英语阅读理解中等难度题查看答案及解析