Food is extremely important to us human beings and rice is one of the main food in the world. Australian researchers have discovered a way to genetically engineer rice which would provide significant health benefits to more than half the world’s population.
A study undertaken at the University of Tasmania, published in a respected journal of the National Academy of Sciences, discovered a method to increase the resistant starch (抗性淀粉）content in rice, making it more digestible and leading to lower rate of diabetes (糖尿病）and overweight.
Steven Smith, the lead author of the study and a foreign expert for the Chinese government who has been appointed to work on crop improvement projects by the Chinese Academy of Sciences, said increasing the higher resistant starch content gave this “designer” rice many added health benefits. “We have discovered that we can increase the amount of resistant starch in cooked rice, which could provide health benefits for a large number of people in Asia and beyond,” Smith said in a media release on Friday. “The same approach can be adapted for use in other cereals, including wheat. Not only can it have benefits for diabetes and obesity, but also for disorders of the bowel(肠）including cancer.”
Rice is the main food for more than half the world’s population, providing much of the world with most of their calories. Smith said that as the rate of diabetes and obesity in Asian countries continued to grow, his “designer” rice could provide a way to limit health problems.
“Not only does resistant starch reduce the possibility of a ‘sugar hit’ but it also reduces the appetite and promotes the growth of the healthy germs.” Smith said.
Smith divides his time between the University of Tasmania and his research lab in Beijing where he hopes to make significant advance in sustainable (可持续的）living.
1.What do we know about the study?
A. It is part of Chinese crop improvement projects.
B. It will have a significant effect on crop researches.
C. It was jointly（联合地）carried out by Australia and China.
D. It helps solve the food problem for over half of the world’s population.
2.Based on the text, the resistant starch ________.
A. exists in large amounts in cooked rice
B. decreases the possibility of a “sugar hit” and provides more calories
C. is helpful in digestion and lowers the rate of overweight and diabetes
D. increases people’s appetite and improves the growth of healthy germs
3.The underlined word “it” in Paragraph 3 refers to _________.
A. resistant starch B. cooked rice
C. the approach D. media release
4.Where does this text probably come from?
A. An environmental report. B. A medical journal.
C. An engineering textbook. D. An agricultural magazine.
高三英语阅读理解困难题
Food is extremely important to us human beings and rice is one of the main food in the world. Australian researchers have discovered a way to genetically engineer rice which would provide significant health benefits to more than half the world’s population.
A study undertaken at the University of Tasmania, published in a respected journal of the National Academy of Sciences, discovered a method to increase the resistant starch (抗性淀粉）content in rice, making it more digestible and leading to lower rate of diabetes (糖尿病）and overweight.
Steven Smith, the lead author of the study and a foreign expert for the Chinese government who has been appointed to work on crop improvement projects by the Chinese Academy of Sciences, said increasing the higher resistant starch content gave this “designer” rice many added health benefits. “We have discovered that we can increase the amount of resistant starch in cooked rice, which could provide health benefits for a large number of people in Asia and beyond,” Smith said in a media release on Friday. “The same approach can be adapted for use in other cereals, including wheat. Not only can it have benefits for diabetes and obesity, but also for disorders of the bowel(肠）including cancer.”
Rice is the main food for more than half the world’s population, providing much of the world with most of their calories. Smith said that as the rate of diabetes and obesity in Asian countries continued to grow, his “designer” rice could provide a way to limit health problems.
“Not only does resistant starch reduce the possibility of a ‘sugar hit’ but it also reduces the appetite and promotes the growth of the healthy germs.” Smith said.
Smith divides his time between the University of Tasmania and his research lab in Beijing where he hopes to make significant advance in sustainable (可持续的）living.
1.What do we know about the study?
A. It is part of Chinese crop improvement projects.
B. It will have a significant effect on crop researches.
C. It was jointly（联合地）carried out by Australia and China.
D. It helps solve the food problem for over half of the world’s population.
2.Based on the text, the resistant starch ________.
A. exists in large amounts in cooked rice
B. decreases the possibility of a “sugar hit” and provides more calories
C. is helpful in digestion and lowers the rate of overweight and diabetes
D. increases people’s appetite and improves the growth of healthy germs
3.The underlined word “it” in Paragraph 3 refers to _________.
A. resistant starch B. cooked rice
C. the approach D. media release
4.Where does this text probably come from?
A. An environmental report. B. A medical journal.
C. An engineering textbook. D. An agricultural magazine.
高三英语阅读理解困难题查看答案及解析
阅读七选五
Trees around us are extremely important and have always been necessary for improving the human conditions. Our existing forests and trees we plant work to make a better world. 1.. Here is a short list of main reasons trees are necessary for improving our living conditions.
●Trees produce oxygen
2.. A leafy tree produces as much oxygen in a season as 10 people inhale in a year. What many people don't realize is that the forest also acts as a giant filter (过滤器) that cleans the air we breathe. Trees help clean the air by preventing airborne particles, reducing heat, and absorbing such pollutants.
●Trees clean the soil
The term phytoremediation is a fancy word for the absorption of dangerous chemicals and other pollutants that have entered the soil. 3.. Trees filter sewage and farm chemicals, reduce the effects of animal wastes, clean roadside spills and so on.
●Trees are carbon sinks
To produce its food, a tree absorbs and locks away carbon dioxide in the wood, roots and leaves. Carbon dioxide is a global warming suspect. 4.. This lockingup process “stores” carbon as wood and not as a “greenhouse” gas.
●5.
Trees block urban noise almost as effectively as stone walls. Trees, planted at strategic points in a neighborhood or around your house, can reduce major noises from freeways and airports.
A．We could not exist as we do if there were no trees
B．Trees help clean the sky
C．A forest is a carbon storage area that can lock up as much carbon as it produces
D．Trees control noise pollution
E．Man has been planting trees to make the planet a more beautiful world
F．The modern human community has other more practical reasons to admire and honor trees
G．Trees can either store harmful pollutants or change the pollutants into less harmful forms
高三英语信息匹配中等难度题查看答案及解析
Alongside air and water, food is a necessity for human beings to survive and thrive. But it’s a lot more than that. As Mariette Dichristina of Scientific American wrote: “The most intimate (亲密的) relationship we will ever have is not with any fellow human being. Instead, it is between our bodies and our food.”
Nowadays, for most people in the world’s wealthiest countries, food is a hobby, an enthusiasm, and even something fashionable.
Turn on the TV in the US, UK or France, and you’ll find at least one channel feeding this popular obsession.
And most of us know at least one person who thinks of themselves as a “foodie”. It’s almost impossible nowadays to check our social media apps without at least two or three photos of delicious meals appearing on our screen.
But behind the fancy recipes and social media bragging (夸耀), many of us forget how much we take food for granted. This is why World Food Day is held each year.
Take Kenya for example. This east African nation has been suffering terrible droughts. The result is that people are beginning to starve. Children in particular are suffering, with some of them even dying.
This may seem shocking to know, especially as many cultures outside of Africa think of food in a completely different way. But even in the UK, families on low incomes are forced to use food banks—European organizations that hand out donated food to those who can’t afford to pay for it themselves.
So what can we do on World Food Day? One good way to spend it would be to feel humble and appreciate what we have. After all, food is essential for survival, but not everyone is as lucky as we are when it comes to dinner time.
1.According to Mariette Dichristina, what has the closest relationship with us?
A.Air. B.Water.
C.Food. D.Human beings.
2.What does the underlined word “foodie” in Paragraph 4 probably mean?
A.Delicious food. B.A person fond of food.
C.A social media app. D.A photo of delicious meals.
3.Who can get help from food banks?
A.Poor people in the UK. B.Poor people in Africa.
C.Starving children in Kenya. D.People in the drought-stricken.
4.What’s the best title for the text?
A.Treat Food as a Hobby B.Time to Appreciate Food
C.Food Shortage in Some Countries D.How to Spend World Food Day
高三英语阅读理解中等难度题查看答案及解析
Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.
Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.
Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.
Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.
Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?
1. When all humans reach a certain age, ________.
A．they suffer the effects of their diet and lifestyle
B．the organs stop to perform appropriately
C．their cells continue to renew themselves
D．they develop arthritis and Alzheimer’s
2. The purpose of showing the case of alligators is to prove ________.
A．alligators are in danger in the wild because of the threat from man, pollution and other animals
B．it is widely accepted that humans have a fixed lifespan
C．there exists an age gene which may control ageing
D．the age gene damages the body
3.The underlined phrase “live indefinitely” in Paragraph 2 probably mean ________.
A．live for a period of time without a fixed end
B．live without a clear aim
C．live in an uncertain way
D．live without being fully grown
4.It can be inferred from Paragraph 4 that ________.
A．by 2050 we might have most of our worn-out organs replaced with new ones commercially
B．never can the ageing process be avoided
C．livers and kidneys are sure to be grown in laboratories by the year 2020
D．lizards and alligators grow new organs inside their body to replace worn-out ones
5. What is the main topic of this passage?
A．DNA researches show how our cells renew themselves.
B．Anti-oxidants are likely to play an important part in keeping people young.
C．How our biological clock works?
D．Eternal（永恒的） youth: new developments in anti-ageing research.
6.By saying “But do we really want to live forever”, the author may probably mean ________.
A．a future where we are born, we grow to maturity, but we never grow old and die is on its way
B．he is uncertain whether we can live forever
C．it remains to be seen whether immortality is a blessing or a curse
D．immortality is no longer a dream
高三英语阅读理解简单题查看答案及解析
Is language, like food, a basic human need? Judging from the extreme experiment of Frederick in the 13th century, it may be. Hoping to discover what language a child would speak if he heard no mother tongue he told the nurses to keep silent.
All the babies died before the first year. But clearly there was more than language deprivation (剥夺，丧失). What was missing was good mothering. Without good mothering, in the first year of life especially, the ability to survive is seriously affected.
Today no such extreme deprivation exists as that ordered by Frederick. Nevertheless, some children are still backward in speaking. Most often the reason for this is that the mother is insensitive to signals of the baby, whose brain is programmed, to mop up language rapidly. There are critical times, it seems when children learn more rapidly. If these sensitive periods are neglected, the ideal time for acquiring skills passes and they might never be learned so easily again.
Linguists suggest that speech milestones are reached in a fixed order and at a constant age, but there are cases where speech has started late in a child who eventually turns out to be of high IQ.
Recent evidence suggests that a baby is born with the ability to speak. What is special about man’s brain, compared with that of the monkey, is the complex system which enables a child to connect the sight and feel of, say, a teddy bear with the sound pattern “teddy bear”.
But speech has to be developed, and this depends on interaction between the mother and the child, where the mother recognizes the signals in the child’s babbling, clinging, grasping, crying, smiling, and responds to them. Insensitivity of the mother to these signals reduces the interaction because the child gets discouraged and sends out only the obvious signals. Sensitivity to the child’s nonverbal (非语言的) signals is basic to the growth and development of language.
1.Frederick’s experiment was extreme because _________.
A．he wanted to prove children are born with ability to speak
B．he wanted his nurses to say another language
C．he was unkind to the nurses
D．he ignored the importance of mothering to the babies
2.The reason that some children are backward in speaking is most likely that _________.
A．they do not listen carefully to their mothers
B．their mothers do not respond to their attempts to speak
C．their brain has to absorb too much language at once
D．their mothers are not intelligent enough to help them
3.In paragraph 3, by “critical times” the author means _________.
A．difficult periods in the child’s life
B．moments when the child becomes critical towards its mother
C．important stages in the child’s development
D．times when mothers often neglect their children
4.If a child starts to speak later than others, he will _________ in future.
A．have a high IQ B．be less intelligent
C．not necessarily be backward D．be insensitive to verbal signals
5.If the mother seldom responds to her child’s signals, _________.
A．the child will be able to speak properly
B．the child will continue to give out signals
C．the child will invent a language of own
D．the child will make little effort to speak
高三英语阅读理解中等难度题查看答案及解析
Food is one of the most basic and important daily needs. It gives us the strength and energy we need 1. (work) and play. Food also plays a role in our social interactions. Whether we 2. (celebrate) important occasions or just relaxing with friends, eating is an important social pastime. It is also an important part of our culture. 3. a particular people like to eat can tell us a lot 4. a country’s geography, history and traditions.
高三英语语法填空中等难度题查看答案及解析
How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits. It offers companionship, improves self-worth and promotes good health. There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools. Such changes often leaves us without a friend. 71 . But for many of us the process is difficult and requires courage. Below are some helpful suggestions on how to make and keep friends.
1. Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people. Besides, you will need to make yourself known by becoming an active member of such places.
2. Start a conversation
Starting a conversation is the second most important step in making new friends. 72 You can always start the conversation. Being able to make small talk is a very useful skill in relating with other people.
3. 73
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together, Hanging out will always be a pleasant experience.
4. Let it grow.
It is a good thing to stay in touch. However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend. 74. The best friendships are the ones that grow naturally.
5. Enjoy your friendship
The best way to enjoy your friendship is to allow your friends to be themselves. 75 Try not to change them from who they are to what you want them to be. Become the kind of friend you will want your friend to be to you.
| A． Be cheerful. |
| B． Do things together. |
| C． Do not wait to be spoken to. |
| D． Try not to find fault with your friends. |
E. Making new friends comes easy for some people.
F. For a friendship to develop you need to stay in touch.
G. So you will need to give your friend time to react to you.
高三英语信息匹配中等难度题查看答案及解析
How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits. It offers companionship, improves self-worth and promotes good health. There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools. Such changes often leaves us without a friend 1 . But for many of us the process is difficult and requires courage. Below are some helpful suggestions on how to make and keep friends.
1. Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people. Besides, you will need to make yourself known by becoming an active member of such places.
2. Start a conversation
Starting a conversation is the second most important step in making new friends. 2 You can always start the conversation. Being able to make small talk is a very useful skill in relating with other people.
3. 3
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together, Hanging out will always be a pleasant experience.
4. Let it grow.
It is a good thing to stay in touch. However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend. 4. The best friendships are the ones that grow naturally.
5. Enjoy your friendship
The best way to enjoy your friendship is to allow your friends to be themselves. 5 Try not to change them from who they are to what you want them to be. Become the kind of friend you will want your friend to be to you.
A． Be cheerful.
B． Do things together.
C． Do not wait to be spoken to.
D． Try not to find fault with your friends.
E. Making new friends comes easy for some people.
F. For a friendship to develop you need to stay in touch.
G. So you will need to give your friend time to react to you.
高三英语信息匹配中等难度题查看答案及解析
How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits. It offers companionship, improves self-worth and promotes good health. There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools. Such changes often leave us without a friend. 71 . But for many of us the process is difficult and requires courage. Below are some helpful suggestions on how to make and keep friends.
1. Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people. Besides, you will need to make yourself known by becoming an active member of such places.
2. Start a conversation
Starting a conversation is the second most important step in making new friends. 72 You can always start the conversation. Being able to make small talk is a very useful skill in relating with other people.
3.73
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together. Hanging out will always be a pleasant experience.
4. Let it grow.
It is a good thing to stay in touch. However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend. 74 . The best friendships are the ones that grow naturally.
5. Enjoy your friendship
The best way to enjoy your friendship is to allow your friends to be themselves. 75 Try not to change them from who they are to what you want them to be. Become the kind of friend you will want your friend to be to you.
A. Be cheerful.
B. Do things together.
C. Do not wait to be spoken to.
D. Try not to find fault with your friends.
E. Making new friends comes easy for some people.
F. For a friendship to develop you need to stay in touch.
G. So you will need to give your friend time to react to you
高三英语信息配对中等难度题查看答案及解析
How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits. It offers companionship, improves self-worth and promotes good health. There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools. Such changes often leave us without a friend . 1.. But for many of us the process is difficult and requires courage. Below are some helpful suggestions on how to make and keep friends.
1. Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people. Besides, you will need to make yourself known by becoming an active member of such places.
2. Start a conversation
Starting a conversation is the second most important step in making new friends. 2. You can always start the conversation. Being able to make small talk is a very useful skill in relating with other people.
3. 3.
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together, Hanging out will always be a pleasant experience.
4. Let it grow.
It is a good thing to stay in touch. However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend. 4.. The best friendships are the ones that grow naturally.
5. Enjoy your friendship
The best way to enjoy your friendship is to allow your friends to be themselves. 5. Try not to change them from who they are to what you want them to be. Become the kind of friend you will want your friend to be to you.
A. Be cheerful.
B. Do things together.
C. Do not wait to be spoken to.
D. Try not to find fault with your friends.
E. Making new friends comes easy for some people.
F. For a friendship to develop you need to stay in touch.
G. So you will need to give your friend time to react to you.
高三英语信息匹配中等难度题查看答案及解析