A new planet-hunting technique has detected the most earth-like planet yet around a star other than our sun, raising hopes of finding a space rock that might support life, astronomers (天文学家) reported recently.
“This is an important discovery to answer the question ‘Are we alone?’” said Michael Turner of the National Science Foundation.
“The team has discovered the most earth-like planet yet, and more importantly, has proved the power of a new technique that is sensitive (灵敏的) to detecting planets that are fit for people to live on,” Turner said in a statement.
In the last decade, astronomers have detected more than 160 planets moving around stars outside our solar system. Most of these have been gas giant planets like Jupiter, which are unfit for life.
But an international team has detected a cold planet about 5.5 times more massive than the earth — still small enough to be considered earth-like — moving around a star about 20,000 light years away, close to the center of the Milky Way.
To find this new planet, the team used a technique called gravitational microlensing (引力微观透镜法). When a planet is circling the closest star, the planet’s gravity can add its own signature to the light. This kind of light signature was observed on July 11 by a group of telescopes in a project known as OGLE, short for Optical Gravitational Lensing Experiment.
“The main advantage of microlensing is the signals for low-mass planets: They’re not weak signals. They’re just rare,” Bennett of the University of Notre Dame in Indiana said by telephone. “If there happens to be a straight line between a foreground star with its planet and the background source star, then you’re able to detect that planet.”
1.The underlined word “detected” in Paragraph 1 probably means “_________”.
A. discovered B. destroyed
C. created D. searched
2.The author’s purpose in writing this passage is to ____.
A. prove that scientists have a lot of difficulties in doing scientific research
B. explain why this planet moves around a star like our sun
C. teach the readers some basic knowledge about the universe
D. tell people about a new technique that finds the most earth-like planet moving round another star
3.From the news report we can infer that _________.
A. the planet is like the earth because it is close to the center of the Milky Way
B. it is quite possible that life may exist on other planets in the universe
C. people have no interest in finding a planet that might support life
D. the question “Are we alone” is too difficult for scientists to answer
4.Which of the following statements is NOT true according to the passage?
A. The signals coming from low-mass planets are too weak to be noticed.
B. Most of the discovered planets are not fit for people to live on.
C. If a star with its planet happens to be in line with the source star, then the planet can be found.
D. The power of the new technique is proved by the discovery of the earth-like planet.
高三英语阅读理解中等难度题
A new planet-hunting technique has detected the most earth-like planet yet around a star other than our sun, raising hopes of finding a space rock that might support life, astronomers (天文学家) reported recently.
“This is an important discovery to answer the question ‘Are we alone?’” said Michael Turner of the National Science Foundation.
“The team has discovered the most earth-like planet yet, and more importantly, has proved the power of a new technique that is sensitive (灵敏的) to detecting planets that are fit for people to live on,” Turner said in a statement.
In the last decade, astronomers have detected more than 160 planets moving around stars outside our solar system. Most of these have been gas giant planets like Jupiter, which are unfit for life.
But an international team has detected a cold planet about 5.5 times more massive than the earth — still small enough to be considered earth-like — moving around a star about 20,000 light years away, close to the center of the Milky Way.
To find this new planet, the team used a technique called gravitational microlensing (引力微观透镜法). When a planet is circling the closest star, the planet’s gravity can add its own signature to the light. This kind of light signature was observed on July 11 by a group of telescopes in a project known as OGLE, short for Optical Gravitational Lensing Experiment.
“The main advantage of microlensing is the signals for low-mass planets: They’re not weak signals. They’re just rare,” Bennett of the University of Notre Dame in Indiana said by telephone. “If there happens to be a straight line between a foreground star with its planet and the background source star, then you’re able to detect that planet.”
1.The underlined word “detected” in Paragraph 1 probably means “_________”.
A. discovered B. destroyed
C. created D. searched
2.The author’s purpose in writing this passage is to ____.
A. prove that scientists have a lot of difficulties in doing scientific research
B. explain why this planet moves around a star like our sun
C. teach the readers some basic knowledge about the universe
D. tell people about a new technique that finds the most earth-like planet moving round another star
3.From the news report we can infer that _________.
A. the planet is like the earth because it is close to the center of the Milky Way
B. it is quite possible that life may exist on other planets in the universe
C. people have no interest in finding a planet that might support life
D. the question “Are we alone” is too difficult for scientists to answer
4.Which of the following statements is NOT true according to the passage?
A. The signals coming from low-mass planets are too weak to be noticed.
B. Most of the discovered planets are not fit for people to live on.
C. If a star with its planet happens to be in line with the source star, then the planet can be found.
D. The power of the new technique is proved by the discovery of the earth-like planet.
高三英语阅读理解中等难度题查看答案及解析
To most Chinese people, the 2020 Lunar New Year has been quite different from any previous Spring Festival. Due to the novel coronavirus pneumonia outbreaks, most people are staying at home, while some were infected. Although it's difficult for many of us to perform our normal duties, we should hold the belief that there are always more approaches that can be found to solve problems. 1.
Read books
If you choose a good book, it can help you enjoy a whole day at home. 2. And your vocabulary could be enlarged as well. Personally, paper copies are recommended. The touch and smell of real paper has no digital replacement.
3.
Everyone can pick up a brush and write something, even if it may look very ugly at first. But the point of such practice is not to write beautiful characters. It's about enhancing your ability to calm down and focus, as you must breathe deeply to keep your hands from shaking. One good option to start with is copying classic texts.
Listen to classic music
Chopin, Mozart, Bach. Any of these great musicians could stun you with their rich legacy. Now, there are many online audio lessons that can help you appreciate classical music. 4. His humorous and informative lessons have attracted many music lovers. Another audio lesson about classical music is a violinist Peng Guanglin, who also teaches at Taiwan Soochow University.
Cook good dishes
5. When you temporarily lose your outdoor options, make sure you eat well. There are many recipes in Chinese cuisine to try, and you can follow video blogger Li Ziqi to get more ideas. She posts videos from an idyllic life in the country, and will undoubtedly serve as excellent inspiration.
A.Keep away from those who were infected.
B.One is from Duan Zhaoxu, a male pianist and a teacher at Beijing Normal University.
C.Once you have to go out, remember to wear face masks.
D.The ability of your brain to process words could be greatly improved through reading.
E.Practice calligraphy
F.Here are four activities you could try to get away from the boredom.
G.For most people, a happy day consists of at least two things: good food and sound sleep.
高三英语七选五中等难度题查看答案及解析
Joanna Cole, born on August 11, 1944 in Newark, New Jersey, has been credited to be one of the most popular children’s authors of all time. She has written over 250 books and is famous for writing one of the most popular children's book series. She knew as early as 5th grade that she was interested in writing and science. Cole has owed a large part of her passion to one of her elementary school teachers.
Joanna Cole continued her education by attending the University of Massachusetts and Indiana. She would eventually earn a bachelor’s degree in psychology from the City College of New York in 1967; after graduation Cole decided to take some education courses to become a librarian at a Brooklyn elementary school in 1967. Eventually, she would take jobs working for Newsweek, Seesaw book club.
Cole’s passion for writing and science was still alive and well during this time. In 197l she decided to write her first book, Cockroaches. She did some research and discovered there had never been a book written for children about cockroaches. So she thought she would be the first.
Cole struck gold when she wrote the first Magic School Bus in 1985. The book would go on to be published the following year and quickly became book series and cartoon series due to its success.
Cole continued to write both non-fiction and fiction books for children. She writes in a way that will hopefully inspire children to think like a scientist. She does this by writing ideas instead of just facts. She also tries to ask questions in her books that require children to think and discover the answers as they read. This creates an engaging experience for children, so it is no wonder why younger readers are hooked on her books.
1.When Joanna Cole was young, she ________.
A. was very popular with children
B. got inspired by one of her teachers
C. began her career of writing novels
D. knew what she would do in the future
2.What does the underlined phrase probably mean?
A. Made a fortune. B. Made a promise.
C. Got ideas. D. Obtained help.
3.What do we know about Joanna Cole?
A. She is the most famous woman writer in America.
B. She writes novels not only for kids but for adults.
C. She is an expert at getting science across to readers.
D. She has made great contributions to science.
4.What kind of person is Cole in the passage?
A. Positive and brave. B. Popular and reliable.
C. Serious and honest. D. Talented and creative.
高三英语阅读理解中等难度题查看答案及解析
Joanna Cole, born on August 11, 1944 in Newark, New Jersey, has been credited to be one of the most popular children’s authors of all time. She has written over 250 books and is famous for writing one of the most popular children’s book series. She knew as early as early as 5th grade that she was interested in writing and science. Cole has owed a large part of her passion to one of her elementary school teachers.
Joanna Cole continued her education by attending the University of Massachusetts and Indiana. She would eventually earn a bachelor’s degree in psychology from the City College of New York in 1967 after graduation, Cole decided to take some education courses to become a librarian at a Brooklyn elementary school in 1967. Eventually, she would take jobs working for Newsweek, Seesaw book club.
Cole’s passion for writing and science was still alive and well during this time. In 1971 she decided to write her first book, Cockroaches. She did some research and discovered there had never been a book written for children about cockroaches. So she thought she would be the first.
Cole struck gold when she wrote the first Magic School Bus in 1985. The book would go on to be published the following year and quickly became book series and cartoon series due to its success.
Cole continued to write both nonfiction and fiction books for children. She writes in a way that will hopefully inspire children to think like a scientist. She does this by writing ideas instead of just facts. She also tries to ask questions in her books that require children to think and discover the answers as they read. This creates an engaging experience for children, so it is no wonder why younger readers are hooked on her books.
1.When Joanna Cole was young, she ________.
A. was very popular with children
B. got inspired by one of her teachers
C. began her career of writing novels
D. knew what she would do in the future
2.What does the underlined phrase probably mean?
A. made a fortune B. made a promise C. got ideas D. obtained help
3.What do we know about Joanna Cole?
A. She is the most famous woman writer in America.
B. She writes novels not only for kids but for adults.
C. She is an expert at getting science across to readers.
D. She has made great contributions to science.
4.What kind of person is Cole in the passage?
A. positive and brave B. popular and reliable
C. serious and honest D. talented and creative
高三英语阅读理解中等难度题查看答案及解析
St. Louis has replaced Camden, New Jersey ______ the most dangerous US city, according to a study based on FBI crime data which was released Monday.
A.for | B.to | C.as | D.with |
高三英语单项填空困难题查看答案及解析
After the new technique was introduced, the factory produced______ tractors in 1998 as the year before.
A. as many twice B. as twice as many
C. twice as many D. twice as many as
高三英语单项填空中等难度题查看答案及解析
After the new technique was introduced, the factory produced _______ cars in 2010as the year before.
A. as twice many B. as many twice
C. twice as many D. twice as
高三英语单项填空中等难度题查看答案及解析
After the new technique was introduced, the factory produced _______ in 2010 as the year before.
A. as twice many machines B. twice many as machines
C. as many machines twice D. twice as many machines
高三英语单项填空中等难度题查看答案及解析
After introducing the new technique, the automobile factory produced ________________ cars in 2010 as the year before.
A. twice as B. twice as much C. twice more D. twice as many
高三英语单项填空中等难度题查看答案及解析
Tiny microbes (微生物) are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil-enriching limestone (石灰石), with the help of a type of tree that grows in tropical areas, such as West Africa.
Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi (霉菌) and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.
The Iroko tree makes a mineral by combining Ca from the earth with CO2 from the atmosphere. The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of the atmosphere. In addition to storing carbon in the trees' leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.
The discovery could lead to reforestation projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.
The findings were made in a three-year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO2 as limestone, and the Iroko-bacteria way showed best results. Work was funded by the European Commission under the Future&Emerging Technologies(FET)scheme.
Dr Bryne Ngwenya of the University of Edinburgh's School of GeoSciences, who led the research, said:"By taking advantage of this natural limestone-producing process, we have a low-tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries."
1.The passage is mainly introducing ______ .
A.some useful natural fungi and bacteria
B.the soil-enriching limestone created by scientists
C.a newly-found tree in West Africa
D.a new way to deal with greenhouse gas
2.Which of the following is True about tiny microbes?
A.Tiny microbes get along well with the Iroko tree in special soil.
B.CO2 can be broken down by natural fungi and bacteria.
C.The more greenhouse gas is, the more active tiny microbes become.
D.Most tiny microbes like living in dry, acidic soil.
3.What does the underlined word "it" in paragraph 3 probably refer to?
A.Carbon dioxide. B.Soil.
C.Carbon. D.Limestone.
4.According to the passage, what can we infer?
A.The action of the tiny microbes can increase the oxygen in the earth.
B.Researchers tend to use natural power to solve their problem.
C.Researchers have done the experiment on trees in Africa for three years.
D.West Africa is one of the most polluted areas all over the world.
高三英语阅读理解中等难度题查看答案及解析