Through a series of experiments, an American scientist has gained an understanding of the social structure of ant societies. The ants 1. (examine) by scientists are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they plant gardens on soils made from finely cut leaves. This is a complex 2. (operate) requiring considerable division of labor. The workers of this type of ant can 3. (divide) into four groups according to size. 4. of the groups performs a particular set of jobs.
The making and care of the garden and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible 5.cutting leaves to make them suitable for use in the gardens and for cleaning the nest. 6. third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The 7. (large) are the soldier ants, whose duty is to defend the nest.
8. (find) out how good the various size groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size groups and then measured 9.efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size groups. 10.this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
高二英语短文填空中等难度题
Through a series of experiments, an American scientist has gained an understanding of the social structure of ant societies. The ants 1. (examine) by scientists are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they plant gardens on soils made from finely cut leaves. This is a complex 2. (operate) requiring considerable division of labor. The workers of this type of ant can 3. (divide) into four groups according to size. 4. of the groups performs a particular set of jobs.
The making and care of the garden and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible 5.cutting leaves to make them suitable for use in the gardens and for cleaning the nest. 6. third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The 7. (large) are the soldier ants, whose duty is to defend the nest.
8. (find) out how good the various size groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size groups and then measured 9.efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size groups. 10.this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
高二英语短文填空中等难度题查看答案及解析
A team of American scientists has found a treatment to protect humans from the deadly H5N1 flu virus, ________ brings great ________ to the world.
A. that; appearance B. which; relief C. which; advantage D. that; profit
高二英语单项填空简单题查看答案及解析
A private group of scientists has announced plans to make an exact copy of a human being. An American member of the team says he and the others will soon begin a serious effort to clone humans. Panos Zavos says the team hopes to manufacture the world’s first cloned baby within the next two years.
In recent years, scientists have produced exact genetic copies of sheep and a few other animals. They created these clones from a single cell of an adult animal.
Three years ago, another American doctor, Richard Seed, announced plans to clone a human being. However, there is no evidence that he has been successful.
Doctor Zavos says the new international group plans to offer human cloning only to women who are currently not able to become pregnant or produce children. He says the aim is to assist people who want to have their own biological child.
The technology would be similar to that used to clone animals. It would involve cleaning genetic material from a woman’s egg. Doctors then would place genetic material from the woman’s husband into the egg before putting it into the woman’s uterus(子宫).
Doctor Zavos says his group plans to do the work in a country near the Mediterranean Sea. He did not name the country. He says an Italian reproductive expert, Sevorino Antinori, is leading the team. Doctor Antinori has led the efforts to help many older women become pregnant. He is known for establishing pregnancies in women as old as sixty.
Many medical experts and other groups are opposed to the idea of cloning humans. Several countries ban or restrict work on human cloning. Several doctors criticize the announcement by Doctor Zavos. They say doctors do not know if cloning humans is possible or safe. They say it would be irresponsible to attempt to clone a human being. That is because the chances of success are too small and the risks are too great.
1.The underlined word “manufacture” in the first paragraph means “_________”.
A.produce B.oppose C.attempt D.experiment
2.Which of the following statements is TRUE?
A.In theory, scientists are unlikely to clone humans.
B.Richard Seed has fallen behind other scientists in cloning humans.
C.Cloning human beings is good for men.
D.People have different ideas about cloning humans.
3.How do many medical experts and other groups like the idea of cloning humans?
A.They are in favour of the idea.
B.They are against the idea.
C.They have an optimistic attitude to the idea.
D.They think it is none of their business.
高二英语阅读理解中等难度题查看答案及解析
You may have heard of the American Dream, an ideal that has powered the hopes of Americans for generations.
It began as a belief that the US was a land of opportunity, and that anyone could achieve success through hard work. At times, the dream has referred to home ownership, a good job, retirement security or each generation doing better than the last.
Yet today, this concept seems to have greatly changed. As Time magazine pointed out, quite different from the older generation, many Millennials (the generation born after 1980) redefine(重新定义) the American Dream as “day-to-day control of your life”. They “prize job mobility, flexible schedules, any work that is more interesting than typing, and the ability to travel”, said the magazine.
Home ownership, once the cornerstone of the American Dream, is becoming a smaller priority for this generation. Meanwhile, nearly 40% of them choose travel as part of their dream. And entrepreneurship(创业) is a rising favorite, as nearly 26% of Millennials consider self-employment as part of their dream.
So what has led to this huge change?
Many point fingers at the poor economy. “Modern young Americans seem bound to face a world stamped by ever narrowing opportunity and social stagnation(停滞),”noted The Daily Beast.
“The rate of 16-to 24-year-olds out of school and out of work is unusually high at 15%. Many college graduates have taken jobs that don’t require a degree,” Time reported.
The magazine worries that these difficulties may lead to a lost generation who are “unable to ever truly find their feet on the corporation’s ladder”.
Dan Kadlec, a reporter of Time, sees Millennials as resetting their expectations. “This situation is different for young adults today,” he wrote. “A true American dream has to feel attainable, and many Millennias are feeling they can only attain a day-today lifestyle that suits them.”
1.What’s the passage mainly about?
A. Meaning of American Dream
B. Redefinition of American Dream
C. Value of Achieving American Dream
D. History of Changing American Dream
2.The underlined word “cornerstone” in Paragraph 4 is closest in meaning to “ ”.
A. growth B. balance
C. purpose D. basis
3.According to the passage, what has changed Millennials’ view of the American Dream?
A. A lack of confidence in themselves
B. Fierce competition in the job market
C. The discouraging economy and unemployment
D. Their dissatisfaction with the government
4.Dan Kadlec thinks Millennials’ new definition of the American Dream is ______.
A. understandable B. beautiful
C. worrying D. Positive
高二英语阅读理解中等难度题查看答案及解析
You may have heard of the American Dream, an ideal that has powered the hopes of Americans for generations.
It began as a belief that the US was a land of opportunity, and that anyone could achieve success through hard work. The dream has referred to home ownership, a good job, retirement security or each generation doing better than the last for a long time.
Yet today, this concept seems to have greatly changed. As Tune magazine pointed out, quite different from the older generation, many Millennials (the generation born after 1980) redefine the American Dream as “day-to-day control of your life”. They “prize job mobility, flexible schedules, any work that is more interesting than typing, and the ability to travel”, said the magazine.
Home ownership, once the cornerstone of the American Dream, is becoming a smaller priority for this generation. Meanwhile, nearly 40% of them choose travel as part of their dream. And running their own business is a rising favorite, as nearly 26% of Millennials consider self-employment as part of their dream.
So what has led to this huge change?
Many point fingers at the poor economy. “Modern young Americans seem bound to face a world stamped by ever narrowing opportunity,” noted The Daily Beast.
“The rate of 16-to-24-year-olds out of school and out of work is unusually high at 15%. Many college graduates have taken jobs that don’t require a degree,” Time reported.
The magazine worries that these difficulties may lead to a lost generation who are “unable to ever truly find their feet on the corporation’s ladder”.
Dan Kadlec, a reporter of Time, sees Millennials as resetting their expectations. “This situation is different for young adults today,” he wrote. “A true American dream has to feel attainable, and many Millennials are feeling they can only attain a day-to-day lifestyle that suits them.”
1.Which has similar meaning to the underlined word “cornerstone”?
A. value B. average
C. reason D. basis
2.What has changed Millennials’ views of the American Dream?
A. The discouraging economy and unemployment.
B. The fierce competition in getting a degree.
C. Their dissatisfaction with the government.
D. Their lack of confidence in themselves.
3.What does Dan Kadlec’s think of Millennials’ definition of the American Dream?
A. considerate B. understandable
C. curious D. negative
4.What can be the best title for this passage?
A. Meaning of American Dream B. Redefinition of American Dream
C. Value of Achieving American Dream D. The Reasons of American Dream
高二英语阅读理解中等难度题查看答案及解析
You may have heard of the American Dream, an ideal that has powered the hopes of Americans for generations.
It began as a belief that the US was a land of opportunity, and that anyone could achieve success through hard work. At times, the dream has referred to home ownership, a good job, retirement security or each generation doing better than the last.
Yet today, this concept seems to have greatly changed. As Time magazine pointed out, quite different from the older generation, many Millennials (the generation born after 1980) redefine(重新定义) the American Dream as “day-to-day control of your life”. They “prize job mobility, flexible schedules, any work that is more interesting than typing, and the ability to travel”, said the magazine.
Home ownership, once the cornerstone of the American Dream, is becoming a smaller priority for this generation. Meanwhile, nearly 40% of them choose travel as part of their dream. And entrepreneurship(创业) is a rising favorite, as nearly 26% of Millennials consider self-employment as part of their dream.
So what has led to this huge change?
Many point fingers at the poor economy. “Modern young Americans seem bound to face a world stamped by ever narrowing opportunity and social stagnation(停滞),”noted The Daily Beast.
“The rate of 16-to 24-year-olds out of school and out of work is unusually high at 15%. Many college graduates have taken jobs that don’t require a degree,” Time reported.
The magazine worries that these difficulties may lead to a lost generation who are “unable to ever truly find their feet on the corporation’s ladder”.
Dan Kadlec, a reporter of Time, sees Millennials as resetting their expectations. “This situation is different for young adults today,” he wrote. “A true American dream has to feel attainable, and many Millennias are feeling they can only attain a day-today lifestyle that suits them.”
1.What’s the passage mainly about?
A. Meaning of American Dream
B. Redefinition of American Dream
C. Value of Achieving American Dream
D. History of Changing American Dream
2.The underlined word “cornerstone” in Paragraph 4 is closest in meaning to “ ”.
A. growth B. balance C. purpose D. basis
3.According to the passage, what has changed Millennials’ view of the American Dream?
A. A lack of confidence in themselves
B. Fierce competition in the job market
C. The discouraging economy and unemployment
D. Their dissatisfaction with the government
4.Dan Kadlec thinks Millennials’ new definition of the American Dream is ______.
A. understandable B. beautiful
C. worrying D. Positive
高二英语阅读理解中等难度题查看答案及解析
A classic series of experiments to determine the effects of overpopulation on communities of rats was conducted by a psychologist,John Calhoun.In each experiment,an equal number of male and female adult rats were placed in an enclosure(场地).The rat populations were allowed to increase.Calhoun knew from experience approximately how many rats could live in the enclosures without experiencing stress due to overcrowding.He allowed the population to increase to approximately twice this number Then he fixed the population by removing the children that were not dependent on their mothers.At the end of the experiments,Calhoun was able to conclude that overcrowding causes a breakdown in the normal social relationships among rats,a kind of social disease.The rats in the experiments did not follow the same patterns of behavior as rats would in a community without overcrowding.
The females in the rat population were the most seriously affected by the high population density(密度).For example,mothers sometimes deserted their children,and,without their mothers’care,the children died.The experiments showed that in overpopulated communities,mother rats do not behave normally.Their behavior may be considered diseased and pathological(病理学的).
The leading males in the rat population were the least affected by over population.Each of these strong males claimed an area of the enclosure as his own.Therefore,these individuals did not experience the overcrowding in the same way as the other rats did..However leading males did behave pathologically at times.Their antisocial(反社会)behavior consisted of attacks on weaker male,female,and immature rats.This unusual behavior showed that even though the leading males had enough living space,they too were affected by the general overcrowding.
Non-leading males in the experimental rat communities also exhibited unusual social behavior.Some withdrew(缩回) completely ,avoiding contact with other rats.Other non-leading males were too active,chasing other rats and fighting each other.
The behavior of the rat population has similarity in human behavior.People in densely(密) populated areas exhibit unusual behavior similar to that of the rats in Calhoun’s experiments.In large urban areas,such as New York City,London,and Cairo,there are deserted children.There are cruel,powerful individuals,both men and women.There are also people who withdraw and people who become too active.Is the major cause of these disorders(混乱)overpopulation?
Calhoun’s experiments suggest that it might be.In any case,social scientists and city planners have been influenced by the results of this series of experiments.
1.Which of the following inferences(推断)can NOT be made from the first paragraph?
A.Overpopulation causes pathological behavior in rat populations.
B.Calhoun had experimented with rats before.
C.Calhoun’s experiment is still considered important today
D.Stress does not occur in rat communities unless there is overcrowding.
2.The author implies that the behavior of the leading male rats is sometimes similar to that of
A.people who would like to keep to themselves
B.people who abandon their children
C.too active people
D.cruel,powerful people
3.The main point of this passage is that _______________.
A.although rats are affected by overcrowding,people are not
B.overcrowding may be an important cause of social pathology
C.the social behavior of rats is seriously affected by overcrowding
D.Calhoun's experiments have influenced many people
高二英语阅读理解中等难度题查看答案及解析
A classic series of experiments to determine the effects of overpopulation on communities of rats was conducted by a psychologist,John Calhoun.In each experiment,an equal number of male and female adult rats were placed in an enclosure(场地).The rat populations were allowed to increase.Calhoun knew from experience approximately how many rats could live in the enclosures without experiencing stress due to overcrowding.He allowed the population to increase to approximately twice this number Then he fixed the population by removing the children that were not dependent on their mothers.At the end of the experiments,Calhoun was able to conclude that overcrowding causes a breakdown in the normal social relationships among rats,a kind of social disease.The rats in the experiments did not follow the same patterns of behavior as rats would in a community without overcrowding.
The females in the rat population were the most seriously affected by the high population density(密度).For example,mothers sometimes deserted their children,and,without their mothers’care,the children died.The experiments showed that in overpopulated communities,mother rats do not behave normally.Their behavior may be considered diseased and pathological(病理学的).
The leading males in the rat population were the least affected by over population.Each of these strong males claimed an area of the enclosure as his own.Therefore,these individuals did not experience the overcrowding in the same way as the other rats did..However leading males did behave pathologically at times. Their antisocial(反社会)behavior consisted of attacks on weaker male,female,and immature rats.This unusual behavior showed that even though the leading males had enough living space,they too were affected by the general overcrowding.
Non-leading males in the experimental rat communities also exhibited unusual social behavior.Some withdrew(缩回) completely ,avoiding contact with other rats.Other non-leading males were too active,chasing other rats and fighting each other.
The behavior of the rat population has similarity in human behavior.People in densely(密) populated areas exhibit unusual behavior similar to that of the rats in Calhoun’s experiments.In large urban areas,such as New York City,London,and Cairo,there are deserted children.There are cruel,powerful individuals,both men and women.There are also people who withdraw and people who become too active.Is the major cause of these disorders(混乱)overpopulation?
Calhoun’s experiments suggest that it might be.In any case,social scientists and city planners have been influenced by the results of this series of experiments.
1.Which of the following inferences(推断)can NOT be made from the first paragraph?
A.Overpopulation causes pathological behavior in rat populations.
B.Calhoun had experimented with rats before.
C.Calhoun’s experiment is still considered important today
D.Stress does not occur in rat communities unless there is overcrowding.
2.The author implies that the behavior of the leading male rats is sometimes similar to that of
A.people who would like to keep to themselves
B.people who abandon their children
C.too active people
D.cruel,powerful people
3.The main point of this passage is that _______________.
A.although rats are affected by overcrowding,people are not
B.overcrowding may be an important cause of social pathology
C.the social behavior of rats is seriously affected by overcrowding
D.Calhoun's experiments have influenced many people
高二英语阅读理解简单题查看答案及解析
Steven Williams, an American father of 14-year-old Peter who has autism(自闭症), searched on the Internet to find a specific kind of little blue cup for his son.
When Peter was two, Steven gave him a little blue cup that was made in China and ever since the cup has become one of the most important things in Peter's life. Steven never thought that the little cup would cause such a big problem. Peter became dependent on this cup because ever since he received the gift he would only drink water from the exact type of little blue cup. Over 12 years, Peter refused to drink water without the cup. Steven was worried about this because their current cup could break soon and he needed to find a replacement for his son to drink with. The problem was that the cup was no longer being produced.
Steven tried to take Peter to a doctor to solve the cup problem, but it was of no use. So Steven decided to seek help from the public on Twitter. He got a lot of responses and the enthusiasm people from all over the world, which gave him confidence and hope. Many strangers found their identical cup and offered to send them to Peter. Though Steven received a lot of help, he still was concerned. All the cups he received would eventually break. As time passed, it would be even harder to find the same cups.
The situation took a surprising turn when the baby products company Tommee Tippee UK got in touch with Steven. They sent a team to China, and they found the same exact model for the cup in the factory that first made it. The company and the Chinese factory decided to make as many as 500 cups for Peter, and Steven was thrilled about all this.
1.What would happen to Peter without the cup?
A. He would feel sad. B. He would break other cups.
C. He would quit drinking water. D. He would suffer from autism.
2.Where did Steven decide to seek help?
A. From a social network. B. From an American company.
C. From a team of researchers. D. From a Chinese factory.
3.What does the underlined word "identical" in Paragraph 3 mean?
A. Exactly alike. B. Nearly broken.
C. Of good quality. D. Of different size.
4.What is the best title for the text?
A. Enthusiastic people Gave Cups to Peter
B. American Boy Preferred Chinese Cup
C. Concerned Father Sought Medical Treatment for Peter
D. Chinese Factory Helped American Boy Get Favorite Cup
高二英语阅读理解中等难度题查看答案及解析
Ever since Jerusha started her college, she began to write letters. Through a series of letters, from freshman to senior in college, she shared her life and study with an unknown gentleman, who never wrote back. Here is the very first letter.
Dear Mr. Kind, Here I am! I traveled yesterday for four hours in a train. It's a funny experience. I never rode in one before. College is the biggest, most confusing place — I get lost whenever I leave my room. I will tell you more later when I'm feeling less puzzled. Now I want to write a letter first just to get me familiar to you. It seems strange to be writing letters to somebody you don't know. It seems strange for me to be writing letters at all — I've never written more than three or four in my life, so please overlook it if they are not a model kind. Before leaving yesterday morning, Mrs. Lippett and I had a very serious talk. She told me how to behave, especially towards the kind gentleman who is doing so much for me. I must take care to be very respectful. I have been thinking of you a great deal this summer; having somebody take an interest in me after all these years makes me feel as though I had found a sort of family. It seems as though I belonged to somebody now, and it's a very comfortable feeling. I must say, however, that when I think about you, my imaqination has very little to work upon. There are just three things that I know: I .You are tall. II .You are rich. III. You hate girl. I suppose I might call you Dear Mr. Girl-Hater. Only that's rather unpleasant to me. Or Dear Mr. Rich-Man, but that's unpleasant to you, as though money were the only important thing about you. Maybe you won't stay rich all your life; But at least you will stay tall all your life! So I decide to call you Dear Daddy-long-legs. I hope you won't mind. It's just a private pet name — we won't tell Mrs. Lippett. The ten o'clock bell is going to ring in two minutes. Our day is divided by bells. We eat and sleep and study by bells. There it goes! Lights out. Good night. You can see how strictly I obey rules due to my training in the John Grier Home. Yours most respectfully, Jerusha Abbott |
1.Which of the following is NOT the reason for Jerusha to write the letter to Mr.Kind?
A. To get her familiar to him. B. To present her thankfulness to him.
C. To share her brand-new college life with him.
D. To apologize to him for not writing letters too often.
2.If Mrs. Lippett learned that the writer calls the man she writes to Daddy-long-legs, she would probably________.
A. burst into laughter B. think it acceptable
C. criticize the writer D. inform the man
3.By "when I think about you, my imagination has very little to work upon.", the writer intends to tell us that________.
A. the man she writes to is dull and boring
B. she is not familiar with the one she writes to
C. it is not interesting at all to write to a stranger
D. she lacks imagination when it comes to writing a letter
4.Jerusha was probably________while she worked on the letter.
A. curious B. light-hearted C. serious D. skeptical
高二英语阅读理解中等难度题查看答案及解析