Babies born in summer are more likely to become short-sighted in late life, a study has shown.
As many as a quarter of all cases of short-sightedness are caused by too great an exposure to sunlight in the first weeks of life, say eye experts.
They are advising all parents to put sunglasses on their babies during the first weeks.
Scientists had already established that over-exposure to sunlight caused short-sightedness in animals.
Researchers who compared the months in which babies were born with whether they needed glasses later on say the principle also applies to humans.
A study of almost 300,000 young adults─the largest of its kind─showed that those born in June and July had a 25 per cent greater chance of becoming severely short-sighted than those born in December or January. Research leader Professor Michael Belkin, of Tel Aviv University, said it was because prolonged illumination(光照) causes the eyeball to lengthen, causing short-sightedness.
Hence the more light a newborn is exposed to, the more the eyeball lengthens and the worse the short-sightedness will be.
The mechanism which lengthens the eyeball is associated with levels of melatonin(褪黑激素), a pigment (色素) which protects the skin against harmful rays of the sun.
In young babies not enough melatonin is released as protection, meaning they are more vulnerable to sunburn and changes to eyeball shape.
Sight expert Professor Daniel O’Leary, of Anglia Ruskin University in Cambridge, said “At the moment we don’t know the precise cause of why light exposure affects sight, but the evidence seems to prove that it is one of the reasons for people becoming short-sighted.”
1. Babies born in summer are more likely to be short-sighted ____________.
A. because the summer sun is too strong for babies
B. because babies born in summer have lengthened eyeballs
C. if they are exposed to much sunlight in the first weeks after they are born
D. if parents don’t know a proper way to protect their babies’ eyes
2. Melatonin is a kind of material to ___________.
A. prevent the eyes from becoming near-sighted
B. protect the skin from harmful sun rays
C. make our body strong
D. protect babies’ eyes from summer sun
3. From what Professor Daniel O’Leary says we can conclude that ___________.
A. there is no evidence that short-sightedness is related to exposure to sunlight
B. whether light exposure affects sight still needs to be further proved
C. he believes that light exposure can cause short-sightedness
D. he tries to give the cause of why light exposure affects sight
4. The underlined word “vulnerable” in the passage probably means __________.
A. easy to be harmed B. resistant
C. protective D. changeable
高二英语阅读理解简单题
Babies born in summer are more likely to become short-sighted in late life, a study has shown.
As many as a quarter of all cases of short-sightedness are caused by too great an exposure to sunlight in the first weeks of life, say eye experts.
They are advising all parents to put sunglasses on their babies during the first weeks.
Scientists had already established that over-exposure to sunlight caused short-sightedness in animals.
Researchers who compared the months in which babies were born with whether they needed glasses later on say the principle also applies to humans.
A study of almost 300,000 young adults─the largest of its kind─showed that those born in June and July had a 25 per cent greater chance of becoming severely short-sighted than those born in December or January. Research leader Professor Michael Belkin, of Tel Aviv University, said it was because prolonged illumination(光照) causes the eyeball to lengthen, causing short-sightedness.
Hence the more light a newborn is exposed to, the more the eyeball lengthens and the worse the short-sightedness will be.
The mechanism which lengthens the eyeball is associated with levels of melatonin(褪黑激素), a pigment (色素) which protects the skin against harmful rays of the sun.
In young babies not enough melatonin is released as protection, meaning they are more vulnerable to sunburn and changes to eyeball shape.
Sight expert Professor Daniel O’Leary, of Anglia Ruskin University in Cambridge, said “At the moment we don’t know the precise cause of why light exposure affects sight, but the evidence seems to prove that it is one of the reasons for people becoming short-sighted.”
1. Babies born in summer are more likely to be short-sighted ____________.
A. because the summer sun is too strong for babies
B. because babies born in summer have lengthened eyeballs
C. if they are exposed to much sunlight in the first weeks after they are born
D. if parents don’t know a proper way to protect their babies’ eyes
2. Melatonin is a kind of material to ___________.
A. prevent the eyes from becoming near-sighted
B. protect the skin from harmful sun rays
C. make our body strong
D. protect babies’ eyes from summer sun
3. From what Professor Daniel O’Leary says we can conclude that ___________.
A. there is no evidence that short-sightedness is related to exposure to sunlight
B. whether light exposure affects sight still needs to be further proved
C. he believes that light exposure can cause short-sightedness
D. he tries to give the cause of why light exposure affects sight
4. The underlined word “vulnerable” in the passage probably means __________.
A. easy to be harmed B. resistant
C. protective D. changeable
高二英语阅读理解简单题查看答案及解析
People born in winter are more likely to suffer mental health disorders, according to a recent study carried out by researchers at Vanderbilt University in Tennessee.
Researchers raised baby mice from birth to weaning (断奶) in either “summer” light cycles of 16 hours of light and 8 hours of dark or “winter” cycles of 8 hours of light and 16 hours of dark. A third group experienced 12 hours of light and 12 hours of dark a day.
Then half the winter mice stayed in a winter cycle, while half switched to a summer schedule. The summer mice were similarly split. The mice raised in equal periods of light and dark were split into three groups, one of which stayed on the 12hour schedule, one of which joined the winter group, and one of which joined the summer group.
After 28 days, it turns out the summerborn mice behaved the same whether they stayed on the summer cycle or switched to winter. But among the winterborn mice, those stayed in winter kept their previous schedule, while those that switched to summer stayed active for an extra hour and a half, which indicates that mice born and weaned in a winter light cycle showed dramatic disruptions in their biological clocks.
The finding is the first of its kind in mammals, and it could explain why people born in winter are at higher risk for mental health disorders including bipolar depression, schizophrenia and seasonal affective disorder.
“We know that the biological clock regulates mood in humans,”said study researcher McMahon. “If the mechanism (机制) similar to the one that we found in mice operates in humans, then it could not only have an effect on a number of behavioral disorders, but also have a more general effect on personality.”
1.How many groups of mice are there finally in all in the experiment?
A. Four. B. Five. C. Six. D. Seven.
2.What's the main idea of the text?
A. The biological clock regulates mood in humans.
B. People born in winter are at higher risk for physical health disorders.
C. Being born in winter has a negative effect on people's mental health.
D. The length of light will influence the behavior of the mice.
3.The underlined word “split”(Paragraph 3) can be replaced by ________.
A. ended B. torn C. hit D. divided
4.Who is the appropriate reader of the passage?
A. A jobhunter. B. A student in the university.
C. A newlymarried couple. D. An experienced dentist.
高二英语阅读理解中等难度题查看答案及解析
People born in winter are more likely to suffer mental health disorders, according to a recent study carried out by researchers at Vanderbilt University in Tennessee.
Researchers raised baby mice from birth to weaning (断奶) in either “summer” light cycles of 16 hours of light and 8 hours of dark or “winter” cycles of 8 hours of light and 16 hours of dark. A third group experienced 12 hours of light and 12 hours of dark a day.
Then half the winter mice stayed in a winter cycle, while half switched to a summer schedule. The summer mice were similarly split. The mice raised in equal periods of light and dark were split into three groups, one of which stayed on the 12hour schedule, one of which joined the winter group, and one of which joined the summer group.
After 28 days, it turns out the summerborn mice behaved the same whether they stayed on the summer cycle or switched to winter. But among the winterborn mice, those stayed in winter kept their previous schedule, while those that switched to summer stayed active for an extra hour and a half, which indicates that mice born and weaned in a winter light cycle showed dramatic disruptions(破坏) in their biological clocks.
The finding is the first of its kind in mammals, and it could explain why people born in winter are at higher risk for mental health disorders.
“We know that the biological clock regulates(管理) mood in humans,” said study researcher McMahon. “If the mechanism (机制) similar to the one that we found in mice operates in humans, then it could not only have an effect on a number of behavioral disorders, but also have a more general effect on personality.”
1. How many groups of mice are there finally in all in the experiment?
A.Four. B.Five. C.Six. D.Seven.
2.What's the main idea of the text?
A.The biological clock regulates mood in humans.
B.People born in winter are at higher risk for physical health disorders.
C.Being born in winter has a negative effect on people's mental health.
D.The length of light will influence the behavior of the mice.
3. The underlined word “split”(Paragraph 3) can be replaced by ________.
A.divided B.torn C.hit D.ended
4.Who is probably the reader of the passage?
A.A jobhunter.
B.A student in the university.
C.A newlymarried couple.
D.An experienced dentist.
高二英语阅读理解中等难度题查看答案及解析
Olivia and Jack are the most popular names in Britain for babies born in 2008, according to a survey made by the website Bounty. Jack has been top for 14 years since it took over from Thomas.
Grace — made famous by the Hollywood star Grace Kelly — slipped back into third place behind Ruby, the name of singer Charlotte Church’s daughter.
Summer climbed 28 places from 44th to 16th. Ava — the name of singer Myleene Klass’s daughter — also leapt 15 places to 19th.
The troubles of the singer Amy Winehouse perhaps had an effect on the popularity of the name. It dropped three places to 23rd. Rebecca is also on the wane(变弱), ranking 48th. So is Courtney, which ranked 88th.
Theo, obviously inspired by England’s teenage football hero Theo Walcott, is among the biggest climbers in the boy’s list, rising from 70th to 58th.
An employee of Bounty said, “Baby names have witnessed the biggest changes over the last decade as parents are increasingly influenced by celebrities. The Bounty baby name poll also shows parents are continuing to be creative and inspirational about the names they choose for their children. Some parents want a name that’s totally unique, and names such as Zebedee, Selim and Zenon are now emerging and growing in popularity. Others are simply breaking with convention and becoming bolder in their choice of names.”
“While politicians’ names may be growing in popularity in America, British politicians don’t influence our choice of names in the UK. Traditional royal names continue to be supreme(最高的) in the boys’ top 100,” The employee said.
1.Which of the following girl names ranks the second?
A.Grace. | B.Ruby. | C.Kelly. | D.Charlotte. |
2.Baby names changed a lot mainly because of the influence of ______.
A.stars | B.parents | C.media | D.politicians |
3.What kind of names covers the most in the top 100 boys’ names?
A.Unique names. | B.Creative names. |
C.Famous people’s names. | D.Traditional royal names. |
4.It can be inferred from the passage that ______.
A.Thomas was the first in boy names in 1994 |
B.Summer ranked 28th in the girls’ list in 2007 |
C.Rebecca might be 50th in the girls’ list in 2007 |
D.Courtney climbed in the boy’s list in 2008 compared with 2007 |
高二英语阅读理解简单题查看答案及解析
Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.
While household robots today do the normal housework, social robots will be much more like companions(同伴) than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.
The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn’t just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.
Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.
Fellow Robots is one company bringing social robots to the market. The company’s “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product’s location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.
The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees. “We have technologies to train social robots to do things not for us, but with us,” said Breazeal.
1.How are social robots different from household robots?
A. They are more like humans.
B. They can control their emotions.
C. They do the normal housework.
D. They respond to users more slowly.
2.What can a Jibo robot do according to Paragraph 3?
A. Communicate with you and perform operations.
B. Obey your orders and remind you to take medicine.
C. Answer your questions and make requests.
D. Take your family pictures and deliver milk.
3.What can Oshbot work as?
A. A language teacher. B. A tour guide.
C. A private nurse. D. A shop assistant.
4.We can learn from the last paragraph that social robots will ________.
A. improve technologies B. train employees
C. be our workmates D. take the place of workers
5.What does the passage mainly present?
A. An introduction to social robots.
B. Marketing strategies for social robots.
C. A new design idea of household robots.
D. Information on household robots.
高二英语阅读理解中等难度题查看答案及解析
Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.
While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.
The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn’t just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.
Social robots are not just finding their way into the home. They have potential(潜在的) applications in everything from education to health care and are already finding their way into some of these spaces.
Fellow Robots is one company bringing social robots to the market. The company’s “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product’s location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.
The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees. “We have technologies to train social robots to do things not for us, but with us,” said Breazeal.
1.How are social robots different from household robots?
A. They can control their emotions.
B. They are more like humans.
C. They do the normal housework.
D. They respond to users more slowly.
2.What can a Jibo robot do according to Paragraph 3?
A. Communicate with you and perform operations.
B. Answer your questions and make requests.
C. Take your family pictures and deliver milk.
D. Obey your orders and remind you to take pills.
3.What can Oshbot work as?
A. A language teacher. B. A tour guide.
C. A shop assistant. D. A private nurse.
4.We can learn from the last paragraph that social robots will ______.
A. train employees B. be our workmates
C. improve technologies D. take the place of workers
高二英语阅读理解中等难度题查看答案及解析
Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.
While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.
The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn’ t just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.
Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.
Fellow Robots is one company bringing social robots to the market. The company’ s “ Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product’ s location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.
The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees. “ We have technologies to train social robots to do things not for us, but with us,” said Breazeal.
1.How are social robots different from household robots?
A. They can control their emotions.
B. They are more like humans.
C. They do the normal housework.
D. They respond to users more slowly.
2.What can a Jibo robot do according to Paragraph 3?
A. Communicate with you and perform operations.
B. Answer your questions and make requests.
C. Take your family pictures and deliver milk.
D. Obey your orders and remind you to take pills.
3.We can learn from the last paragraph that social robots will ______.
A. train employees
B. be our workmates
C. improve technologies
D. take the place of workers
4.What does the passage mainly present?
A. A new design idea of household robots.
B. Marketing strategies for social robots.
C. Information on household robots.
D. An introduction to social robots.
高二英语阅读理解简单题查看答案及解析
Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.
While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.
The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn’t just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.
Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.
Fellow Robots is one company bringing social robots to the market. The company’s “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product’s location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.
The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees.“We have technologies to train social robots to do things not for us, but with us,” said Breazeal.
1.How are social robots different from household robots?
A. They can control their emotions.
B. They are more like humans.
C. They do the normal housework.
D. They respond to users more slowly.
2.What can Oshbot work as?
A. A language teacher. B. A tour guide.
C. A shop assistant. D. A private nurse.
3.We can learn from the last paragraph that social robots will ______.
A. train employees
B. be our workmates
C. improve technologies
D. take the place of workers
4. What does the passage mainly present?
A. A new design idea of household robots.
B. Marketing strategies for social robots.
C. Information on household robots.
D. An introduction to social robots.
高二英语阅读理解中等难度题查看答案及解析
Studies show that kids living and studying in a harmonious environment are less likely to become .
A. abnormal B. aggressive
C. alarmed D. opposed
高二英语单项填空中等难度题查看答案及解析
Babies' health is much more likely to be affected if______ parent smokes.
A.both | B.none | C.neither | D.either |
高二英语单项填空中等难度题查看答案及解析