The universe is expanding faster than it used to, meaning it’s about a billion years younger than we thought, a new study by a Nobel Prize winner says.
At issue is a number called the Hubble constant, a calculation for how fast the universe is expanding. Some scientists call it the most important number in cosmology, the study of the origin and development of the universe.
Using NASAS Hubble Space Telescope, lohns Hopkings University astronomer Adam Riess concluded in this week’s Astrophysical Journal that the figure is 9% higher than the previous calculation, which was based on studying leftovers from the Big Bang.
The trouble is， Riess and others think both calculations are correct. Confused? That’s OK, so are the experts. They find the conflict so confusing that they are talking about coming up with “new physics”, incorporating (合作) perhaps some yet-to-be-discovered particle or other cosmic (宇宙) “fudge factors” like dark energy or dark matter
“Its looking more and more like were going to need something new to explain this,” said Reiss, who won the 2011 Nobel in physics.
NASA astrophysicist John Mather, another Nobel winner, said this leaves two obvious options, “1. We’re making mistakes we can’t find yet. 2. Nature has something we can’t find yet.”
Even with the discovery, life continues on Earth the way it always has. But to astrophysicists trying to get a handle on our place in this expanding universe, this is a cosmic concern. In fact, the universe is really mystical (神秘的). Scientists have done lots of study about it but there is still much they haven’t discovered.
1.What is the finding of the new study?
A.The earth is younger than expected.
B.Many universal problems are rising.
C.The universe is growing faster than before.
D.The finding is based on past scientists’ calculations.
2.What does the underlined word “it” refer to in Paragraph 2?
A.The Hubble constant. B.The faster expanding universe.
C.The development of the universe. D.The scientific research on the universe.
3.How do the experts respond to the conflict of the finding in Paragraph 4?
A.They want to raise a new theory.
B.They want to explore dark matter.
C.They want to further calculate the finding.
D.They want to mix together both calculations.
4.What can we infer from John Mather’s words?
A.We cannot find anything useful.
B.Astronomers are making many mistakes.
C.We need to learn about the universe.
D.We cannot find something new from nature.
高三英语阅读理解困难题
The universe is expanding faster than it used to, meaning it’s about a billion years younger than we thought, a new study by a Nobel Prize winner says.
At issue is a number called the Hubble constant, a calculation for how fast the universe is expanding. Some scientists call it the most important number in cosmology, the study of the origin and development of the universe.
Using NASAS Hubble Space Telescope, lohns Hopkings University astronomer Adam Riess concluded in this week’s Astrophysical Journal that the figure is 9% higher than the previous calculation, which was based on studying leftovers from the Big Bang.
The trouble is， Riess and others think both calculations are correct. Confused? That’s OK, so are the experts. They find the conflict so confusing that they are talking about coming up with “new physics”, incorporating (合作) perhaps some yet-to-be-discovered particle or other cosmic (宇宙) “fudge factors” like dark energy or dark matter
“Its looking more and more like were going to need something new to explain this,” said Reiss, who won the 2011 Nobel in physics.
NASA astrophysicist John Mather, another Nobel winner, said this leaves two obvious options, “1. We’re making mistakes we can’t find yet. 2. Nature has something we can’t find yet.”
Even with the discovery, life continues on Earth the way it always has. But to astrophysicists trying to get a handle on our place in this expanding universe, this is a cosmic concern. In fact, the universe is really mystical (神秘的). Scientists have done lots of study about it but there is still much they haven’t discovered.
1.What is the finding of the new study?
A.The earth is younger than expected.
B.Many universal problems are rising.
C.The universe is growing faster than before.
D.The finding is based on past scientists’ calculations.
2.What does the underlined word “it” refer to in Paragraph 2?
A.The Hubble constant. B.The faster expanding universe.
C.The development of the universe. D.The scientific research on the universe.
3.How do the experts respond to the conflict of the finding in Paragraph 4?
A.They want to raise a new theory.
B.They want to explore dark matter.
C.They want to further calculate the finding.
D.They want to mix together both calculations.
4.What can we infer from John Mather’s words?
A.We cannot find anything useful.
B.Astronomers are making many mistakes.
C.We need to learn about the universe.
D.We cannot find something new from nature.
高三英语阅读理解困难题查看答案及解析
Smiling
Smile is a universal language, which is widely used throughout the world. 1., the meaning of a smile in different cultures may be different. Depending on different cultures, smiling can express joy and2. (amuse), but it can also indicate embarrassment. The following examples show this point of view:
In an attempt to be open and 3.(friend), people in the United States smile a lot. Every one smiles at each other and this nonverbal communication shows being polite in the United States. But in China, smiling is not only 4.expression of happiness, but also a way to avoid5.(be) embarrassed. Chinese people like smiling when they are embarrassed in order to avoid embarrassment. Smiling is a kind of good will but not sneer (嘲笑). For example: When a child 6.(fall) off from a bike, the adults in China may smile,7.is a kind of gentle encouragement and may not be a kind of impolite laugh.
Related8.the smile is the laugh. Also, different cultures have different 9.(meaning) about laugh. Americans can enjoy a very heartfelt belly (腹部) laugh that comes from the deepest emotions while most Chinese may think10.silly to laugh that way.
高三英语短文填空困难题查看答案及解析
We used to mistake that heavy objects fell faster than light .
A. the ones B. those C. ones D. these
高三英语单项填空中等难度题查看答案及解析
Smile is a universal language, which 1. (use) throughout the world. However, the meaning of a smile in different cultures may be different. Depending on different cultures, smiling can express joy and 2. (amuse), but it can also indicate embarrassment. The following examples show this point of view. In an attempt to be open and 3. (friend), people in the United States smile a lot. Every one smiles at each other and this nonverbal communication shows being polite in the United States. But in China, smiling is not only 4. expression of happiness, but also a way to avoid 5.(be) embarrassed. Chinese people like smiling when they are embarrassed in order to avoid embarrassment. Smiling is a kind of good will but not sneer (嘲笑). For example: When a child falls off from a bike, the adults in China may smile, 6. is a kind of gentle encouragement and may not be a kind of impolite laugh.
The laugh is 7. (relate) to the smile. Also, different cultures have various 8. (meaning) about laugh. Americans can enjoy a very heartfelt belly (腹部) laugh that comes 9. the deepest emotions while most Chinese may think 10. silly to laugh that way.
高三英语语法填空困难题查看答案及解析
Words mean more than what is _____ on paper. It takes the human voice to fill them with shades of deeper meaning.
A. set off B. set up
C. set down D. set aside
高三英语单项填空中等难度题查看答案及解析
In most colleges and universities the examination is used as a chief means of deciding whether a student succeeds or fails in mastering a particular subject. Although it does the job quite efficiently, 1. side effects are also enormous.
To begin 2. , examinations lower the standards of teaching. Since teachers are often judged 3. examination results, they are reduced to training their students in exam techniques. No subjects can be taught successfully merely through being approached with intent to take examinations. In addition, the most undesirable effect is 4. examinations encourage bad study habits. As 5. examination score is the only criterion for his academic performance, a student is driven to memorize mechanically rather 6. to think creatively.
In fact, few 7. us admit that examinations can contribute anything really important to the students’ academic development. If that is the case, 8. cannot we make a change and devise something more efficient and reliable than examinations?
高三英语其他题中等难度题查看答案及解析
Americans use the term “college students” to mean students either in colleges or universities. Not only that, Americans almost never say “going off to university” or “when I was in university.” That sounds British. 1.
College, university: what’s the difference? 2. Both offer undergraduate degrees in the arts and sciences, for example. And both can help prepare young people to earn a living.
But many colleges do not offer graduate studies. Another difference is that universities are generally bigger. 3.
Another place of higher education, especially in technical areas, is an institute, like the Massachusetts Institute of Technology. Yet even an institute of technology can offer a wide choice of programs and activities.
Modern universities developed from those of Europe in the Middle Ages. The word “university” came from the Latin universities, describing a group of people organized for a common purpose.4. In England, colleges were formed to provide students with places to live. Usually each group was studying the same thing. So college came to mean an area of study.
The first American universities divided their studies into a number of areas and called each one a college. This is still true. 5. For example, Harvard College is the undergraduate part of Harvard University.
Programs in higher learning can also be called schools, like a school of engineering or a medical school within a college or university. You know, learning all these terms is an education in itself.
A. A college can also be a part of a university.
B. There are more universities than colleges in the USA.
C. They offer more programs and do more research.
D. “College” came from collegium, a Latin word with a similar meaning.
E. Universities and colleges offer students different opportunities.
F. Instead, they say “going off to college” and “when I was in college.”
G. Colleges and universities have many things in common.
高三英语七选五中等难度题查看答案及解析
More students than ever before are taking a gap year (间隔年) before going to university. It used to be called the “year off” between school and university. The gap-year phenomenon originated (起源) with the months left over to Oxbridge applicants between entrance exams in November and the start of the next academic year.
This year, 25,310 students who have accepted places in higher education institutions have put off their entry until next year, according to statistics on university entrance provided by the University and College Admissions Service (UCAS).
That is a record 14.7% increase in the number of students taking a gap year. Tony Higgins from UCAS said that the statistics are good news for everyone in higher education. “Students who take a well-planned year out are more likely to be satisfied with, and complete, their chosen course. Students who take a gap year are often more mature and responsible.” he said.
But not everyone is happy. Owain James, the president of the National Union of Students (NUS), argued that the increase is evidence of student hardship—young people are being forced into earning money before finishing their education. “New students are now aware that they are likely to leave university up to £ 15,000 in debt. It is not surprising that more and more students are taking a gap year to earn money to support their study for the degree. NUS statistics show that over 40% of students are forced to work during term time and the figure increases to 90% during vacation periods,” he said.
1.What do we learn about the gap year from the text?
A.It is flexible in length. B.It is a time for relaxation.
C.It is increasingly popular. D.It is required by universities.
2.According to Tony Higgins, students taking a gap year .
A.are better prepared for college studies
B.know a lot more about their future jobs
C.are more likely to leave university in debt
D.have a better chance to enter top universities
3.How does Owain James feel about the gap-year phenomenon?
A.He’s puzzled. B.He’s worried.
C.He’s surprised. D.He’s annoyed.
4.What would most students do on their vacation according to NUS statistics?
A.Attend additional courses. B.Make plans for the new term.
C.Earn money for their education. D.Prepare for their graduate studies.
高三英语阅读理解中等难度题查看答案及解析
More students than ever before are taking a gap year(间隔年) before going to university. It used to be the “year off” between school and university. The gap-year phenomenon originated(起源) with the months left over to Oxbridge applicants between entrance exams in November and the start of the next academic year.
This year, 25,310 students who have accepted places in higher education institutions have put off their entry until next year, according to statistics on university entrance provided by the University and College Admissions Service (UCAS).
That is a record 14.7% increase in the number of students taking a gap year. Tony Higgins from UCAS said that the statistics are good news for everyone in higher education. “Students who take a well-planned year out are more likely to be satisfied with, and complete, their chosen course. Students who take a gap year are often more mature and responsible,” he said.
But not everyone is happy. Owain James, the president of the National Union of Students (NUS), argued that the increase is evidence of student hardship – young people are being forced into earning money before finishing their education. “New students are now aware that they are likely to leave university up to￡15,000 in debt. It is not surprising that more and more students are taking a gap year to earn money to support their study for the degree. NUS statistics show that over 40% of students are forced to work during term time and the figure increases to 90% during vacating periods,” he said.
1.What do we learn about the gap year from the text?
A. It is flexible in length.
B. It is a time for relaxation
C. It is increasingly popular
D. It is required by universities
2.According to Tony Higgins. students taking a gap year ____.
A. are better prepared for college studies
B. know a lot more about their future job
C. are more likely to leave university in debt
D. have a better chance to enter top universities
3.How does Owain James feel about the gap-year phenomenon?
A. He’s puzzled
B. He’s worried
C. He’s surprised
D. He’s annoyed
4.What would most students do on their vacation according to NUS statistics?
A. Attend additional courses.
B. Make plans for the new term
C. Earn money for their education
D. Prepare for their graduate studies
高三英语阅读理解中等难度题查看答案及解析
The sixth mass extinction is not a worry for the future. It’s happening now，much faster than previously expected，and it's entirely our fault，according to a study puhlished Mooday.
Humans have already wiped out hundreds of species and pushed many more to the brink of extinction through wildlife trade，pollution，habitat loss and the use of toxic substances. The findings published in the scientific Journal Proceedings of the National Academy of Sciences( PNAS)show that the rate at which species are dying out has accelerated in recent decades.
Gerardo Ceballos González，a professor of ecology at the National Autonomous University of Mexico and one of the authors of the study，said approximately 173 species went extinct between 2001 and 2014. “173 species is 25 times more extinct species than you would expect under the normal extinction rate. ”he told CNN in an email. He and his team found that in the past 100 years，more than 400 vertebrate(脊椎动物的)species went extinct. In the normal course of evolution，such extinctions would have taken up to 10，000 years，they said.
Mass extinctions are just as severe as their name suggests. There have been five mass extinction events in the Earth’s history，each wiping out between 70％and 95％of the species of plants，animals and microorganisms. The most recent，66 million years ago，saw dinosaurs disappear. The past events were caused by catastrophic changes of the environment，including massive volcanic eruptions or collision with an asteroid.
The sixth mass extinction the one happening now—is different：scientists say it’s caused by humans. The researchers also said the current coronavirus(冠状病毒)crisis shows people’s recklessness(鲁莽)towards nature can seriously hurt themselves. Many endangered species are dying in large numbers due to the trade in wild animals and plants.
1.What does the underlined word“toxic”in Para. 2 mean?
A.Poisonous B.Useful
C.Alternative D.Environment-friendly
2.How does the writer convince readers of the seriousness of the mass extinctions?
A.By listing reliable statistics.
B.By imagining a picture of the extinctions.
C.By mentioning some news from CNN.
D.By explaining the history of the extinctions.
3.What is the purpose of the last paragraph?
A.To tell the difference between the fifth and sixth extinction.
B.To explain the cause of the coronavirus crisis.
C.To warn humans to get rid of their wrong actions.
D.To show the writer’s concern about the endangered species.
4.What does this article mainly talk about?
A.The changes of the environment do harm to wildlife.
B.The sixth mass extinction is much faster than expected.
C.Mass extinctions are just as severe as their name suggests.
D.The current coronavirus has arisen from the illegal trade.
高三英语阅读理解中等难度题查看答案及解析