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Why are some people better able to beat the flu than others? Part of the answer, according to a new study, is related to the first flu strain we met in childhood.
Scientists from UCLA and the University of Arizona have found that people’s ability to beat the flu virus is decided not only by the sub types of flu they have had throughout their lives, but also by the sequence (顺序) in which they have been infected by those viruses. Their study was published in PLoS Pathogens. The research offers an explanation for why some people become much worse than others when infected with the same strain of the flu virus.
In addition, UCLA scientists, including Professor James Lloyd-Smith, who was also a senior author of the PLoS Pathogens research, recently completed a study that analyzed (分析)travel-related screening(筛查) for the 2019-nCoV. The researchers reported that screening travelers is not very effective for the 2019 coronavirus ― that it will catch less than half of infected travelers, on average ― and that most infected travelers cannot be found out, meaning that they have no symptoms(症状)yet, and are unaware that they have been at high risk. So stopping the spread of the virus is not simply a matter of improving screening methods at airports and other travel centers.
“This puts the responsibility on government officials and public health officials to follow up with travelers after they arrive, to separate them and trace(追踪) their contacts if they get sick later,” said Lloyd-Smith, a UCLA professor of ecology and evolutionary biology(生态学和进化生物学). “Many governments have started to impose quarantines (隔离), or even travel bans, as they realize that screening is not enough to stop the spread of the coronavirus.”
One major concern, Lloyd-Smith said is that other countries, especially developing nations, lack the infrastructure(基础设施)and resources for those measures, and are therefore vulnerable to importing(输入) the disease. “Much of the public health world is very concerned about the virus being introduced into Africa or India, where large populations exist that are not able to receive advanced medical care,” he said.
1.Why is the scientists’ research very important?
A.It explains the cause of the flu virus. B.It reduces the risk of people being infected.
C.It analyzes(分析) people’s ability to fight off the virus. D.It stops the spread of the flu virus all around the world.
2.What do we know about the novel coronavirus from Paragraph 3?
A.Travelers are at high risk of being exposed to it.
B.It is more difficult to stop its spread than expected.
C.Most travelers infected with it are detected by screening.
D.It spreads especially quickly at airports and railway stations.
3.Why does the writer mention Lloyd-Smith’s words in Paragraph 4?
A.To persuade people not to travel. B.To provide a method to kill the virus.
C.To show the harmful effects of the virus. D.To stress(强调) the responsibilities of officials.
4.Which of the following best explains the underlined word “vulnerable” in the last paragraph?
A.Easy. B.Impossible. C.Responsible. D.Indifferent.
九年级英语阅读单选困难题查看答案及解析
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It is true that people with better education are usually able to get better jobs．In other words, they have more chances to choose a good job while people with little or no education don't．It seems that the purpose of education is to make people get jobs．But this isn't accepted by all people．
Some people may think that a person should spend the best years of his life getting education only for a way of living．This was probably one of the earliest reasons of education．In fact, if education is just a way of making a living, people don't need to spend so much time in school．People can get education for a living in a short time．Subjects like History and Geography need not be taught to everyone．Even Language and Mathematics need not be taught in detail, either．Here it is clear that education is much more than teaching a man to get a way of living．
Education is well-rounded and it is mainly for improving a man．It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities．After that, it is to make him a wise man and thankfully enjoy the achievements of human．Education is to make a man lead a better life． Educated people are expected to be able to listen to good music, read good books, watch plays and most of all take an interest in the world．
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason．
1.People with little education usually ________．
A. spend a long time in school
B. have a good chance to get a job
C. spend the best years choosing jobs
D. have fewer chances to get a good job
2.The earliest education was probably to ________．
A. make a man lead a better life
B. teach a man to write and think
C. make people get a way of living
D. teach people to read good books
3.It is expected that educated people will be able to ________．
A. accept education as a way of living
B. take an interest in the whole world
C. develop their abilities to make plays
D. learn subjects like Language and Maths
4.The passage mainly tells us that ________．
A. education should make a man improve
B. people can get education in a short time
C. people should be able to get better jobs
D. all subjects are so important for a way of living
九年级英语阅读单选中等难度题查看答案及解析
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Why do some people seem to be naturally happier than others?
Researchers from the University of Edinburgh have known the answer according to their recent study. Nine hundred twins took part in the study and had their happiness levels measured. The result shows that our genes(基因), in fact, control half of the personality traits(特点) that make us happy. And the other half is linked with lifestyles, careers and relationships. That is to say, individual differences in happiness are based on genetic differences between people.
"All human beings naturally desire happiness. We have found that happiness is partly rooted in genes," said Dr Alexander Weiss, the leader of the research. "This study is both a milestone and a new beginning: A milestone because we are now sure that there is a genetic side of happiness and a new beginning because the happy genes have just been found."
However, the researchers warn that genes are not the whole story. The environment can also affect oar happiness levels. In fact, a great deal of our happiness is directly connected with whatever is happening in our lives. Thus finding the right matters affecting us is the correct thing.
To become truly happy, we need to understand our important needs perfectly for if we fail to satisfy our needs, then unhappiness might happen. Besides, doing simple things, such as keeping a journal and writing down three things that we are thankful for every day, can increase our long-term happiness. Will you try it tonight?
1.What plays the most important role in making us happy?
________________________________________________________
2.What tip will you give to the people who are easily unhappy?
_________________________________________________________
3.Some people think wealth seems to bring all happiness in life. Do you agree with this point of view? Why or why not?
________________________________________________________
九年级英语回答问题中等难度题查看答案及解析
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Usually people with better education are able to get better jobs,In other words,they have more chances to choose a good job while people with little or no education don’t.It seems that the purpose of education is to make people get jobs.But it isn’t true.
Some people may think that a person spends the best years of his life to get education only to make a living.This was probably one of reasons of education.In fact,if education is just a way of making a living,people don’t need to spend so much time in school. If people just want to make a living,they can get a short-time education.Subjects like history and geography need not be taught to everyone.Even language and math need not be taught in detail(详细地),either.It is clear that education is much more than teaching a man to get a way of living.
Education is mainly for improving a man. It is not only to teach him to speak, read and write,but also to develop his other abilities.It can make him a wise man and enjoy the achievements of humans.Education is to make a man lead to a better life.Educated people are expected to be able to listen to good music,read good books,watch plays and,most of all,take an interest in the world.
I would agree that making a good living is an important reason for education,but certainly not the most important one.
1.The writer thinks people with little education usually have more chances to get jobs.
2.People needn’t learn much in school if they only want to make a living from the passage.
3.It is expected that educated people will be able to have a better life in the world.
4.The most important reason for education is to make a good living.
5.The passage mainly tells us that people can get education in a short time.
九年级英语阅读理解中等难度题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don't. It seems that the purpose of education is to make people get jobs. But this isn't accepted by all people.
Some people may think that a person should spend the best years of his life to get education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living, people don't need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and maths need not be taught in detail, either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded (全面的) and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements of human. Education is to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1. The earliest education was probably to_______.
A. make a man lead a better life
B. teach a man to write and read
C. make people get a way of living
D. teach people to read good books
2.It is expected that educated people will be able to_______.
A. accept education as a way of living
B. take an interest in the whole world
C. develop their abilities to make plays
D. learn subjects like language and math
3.The passage mainly tells us that_______.
A. education should make a man improve
B. people can get education in a short time
C. people should be able to get good paying jobs
D. all subjects are so important for a way of living
九年级英语阅读理解简单题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don’t. It seems that the purpose of education is to make people get jobs. But this isn’t accepted by all people.
Some people may think that a person should spend the best years of his life getting education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living. People don’t need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and mathematics need not be taught in detail (详细地), either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements of human. Education is to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and most of all take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1.People with little education usually .
A. spend a long time in school
B .have a good chance to get a job
C. spend the best years to choose jobs
D. have fewer chances to get a good job
2.The earliest education was probably to .
make a man lead a better life
teach a man to write and think
make people get a way of living
teach people to read good books
3.The underlined word “well-rounded” in the passage means “ “ in Chinese.
A.圆满的 B.崭新的 C.公平的 D.全面的
4.It is expected that educated people will be able to .
accepted education as a way of living
take an interest in the world
develop their abilities to make plays
learn subjects like language and math
5.The passage mainly tells us that .
education is mainly for improving a man
people can get education in a short time
people should be able to get better paying jobs
all subjects are so important for a way of living
九年级英语阅读理解中等难度题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don’t. It seems that the purpose of education is to make people get jobs. But this isn’t accepted by all people.
Some people may think that a person should spend the best years of his life to get education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living, people don’t need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and maths need not be taught in detail, either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements of human. Educationis to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1.People with little education usually .
A. spend a long time in school
B. have a good chance to get a job
C. spend the best years to choose jobs
D. have fewer chances to get a good job
2. The earliest education was probably to .
A. make a man lead a better life
B. teach a man to write and read
C. make people get a way of living
D. teach people to read good books
3.The underlined word “well-rounded” in the passage means “ “in Chinese.
A. 圆满的 B. 崭新的
C．公平的 D. 全面的
4. It is expected that educated people will be able to .
A. accept education as a way of living
B. take an interest in the whole world
C. develop their abilities to make plays
D. learn subjects like language and math
5. The passage mainly tells us that .
A. education should make a man improve
B. people can get education in a short time
C. people should be able to get good paying jobs
D. all subjects are so important for a way of living
九年级英语完型填空中等难度题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don’t. It seems that the purpose of education is to make people get jobs. But this isn’t accepted by all people.
Some people may think that a person should spend the best years of his life to get education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living, people don’t need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and mathematics need not be taught in detail(详细地), either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative (有创造力的) thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements (成果) of human. Education is to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and most of all take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1.People with little education usually ______.
A.spend a long time in school B.have a good chance to get a job
C.spend the best years to choose jobs D.have fewer chances to get a good job
2.The earliest education was probably to______.
A.make a man lead a better life B.make people get a way of living
C.teach a man to write and think D.teach people to read good books
3.The underlined word “well-rounded” in the passage means “_______” in Chinese.
A.圆满的 B.崭新的 C.全面的 D.公平的
4.It is hoped that educated people will be able to ______.
A.take an interest in the whole world
B.develop their abilities to make plays
C.accept education as a way of living
D.learn subjects like language and math
5.The passage mainly tells us that _______.
A.people can get education in a short time
B.education should make a man improve
C.people should be able to get better paying jobs
D.all subjects are so important for a way of living
九年级英语阅读单选中等难度题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don’t. It seems that the purpose of education is to make people get jobs. But this isn’t accepted by all people.
Some people may think that a person should spend the best years of his life to get education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living, people don’t need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and mathematics need not be taught in detail(详细地), either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements of human. Education is to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and most of all take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1.People with little education usually ________.
A.spend a long time in school B.have a good chance to get a job
C.spend the best years to choose jobs D.have fewer chances to get a good job
2.The earliest education was probably to________.
A.make a man lead a better life B.teach a man to write and think
C.make people get a way of living D.teach people to read good books
3.The underlined word “well-rounded” in the passage means “________” in Chinese.
A.圆满的 B.崭新的 C.公平的 D.全面的
4.It is expected that educated people will be able to ________.
A.accept education as a way of living B.take an interest in the whole world
C.develop their abilities to make plays D.learn subjects like language and math
5.The passage mainly tells us that ________.
A.education should make a man improve B.people can get education in a short time
C.people should be able to get better paying jobs D.all subjects are so important for a way of living
九年级英语阅读单选中等难度题查看答案及解析
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It is true that people with better education are usually able to get better paying jobs. In other words, they have more chances to choose a good job while people with little or no education don’t. It seems that the purpose of education is to make people get jobs. But this isn’t accepted by all people.
Some people may think that a person should spend the best years of his life to get education only for a way of living. This was probably one of the earliest reasons of education. In fact, if education is just a way of making a living, people don’t need to spend so much time in school. People can get education for a living in a short time. Subjects like history and geography need not be taught to everyone. Even language and maths need not be taught in detail, either. Here it is clear that education is much more than teaching a man to get a way of living.
Education is well-rounded and it is mainly for improving a man. It is not only to teach him to speak, read and write, but also to develop his creative thinking and other abilities. After that, it is to make him a wise man and thankfully enjoy the achievements of human. Educationis to make a man lead a better life. Educated people are expected to be able to listen to good music, read good books, watch plays and take an interest in the world.
I would agree that making a good living is an important reason for education, but certainly not the most important or the main reason.
1. People with little education usually .
A. spend a long time in school
B. have a good chance to get a job
C. spend the best years to choose jobs
D. have fewer chances to get a good job
2.The earliest education was probably to .
A. make a man lead a better life
B. teach a man to write and read
C. make people get a way of living
D. teach people to read good books
3.The underlined word “well-rounded” in the passage means “ “in Chinese.
A. 圆满的 B. 崭新的 C．公平的 D. 全面的
4.It is expected that educated people will be able to .
A. accept education as a way of living
B. take an interest in the whole world
C. develop their abilities to make plays
D. learn subjects like language and maths
5.The passage mainly tells us that .
A. education should make a man improve
B. people can get education in a short time
C. people should be able to get good paying jobs
D. all subjects are so important for a way of living
九年级英语阅读理解中等难度题查看答案及解析