_______ on earth is it _______ has eaten up all the leaves of these young trees in just
one night?
| A．What, that | B．Who, that | C．Why, which | D．How, that |
高三英语单项填空中等难度题
_______ on earth is it _______ has eaten up all the leaves of these young trees in just
one night?
| A．What, that | B．Who, that | C．Why, which | D．How, that |
高三英语单项填空中等难度题查看答案及解析
Meeting all the ______applied to Earth’s seven other continents, Zealandia is on its way to becoming a new continent.
A.criteria B.curricula C.data D.phenomena
高三英语单项填空中等难度题查看答案及解析
--- Who has eaten all the cake, Jim?
--- Oh, ________must be your two pet dogs.
A．it B．they C．that D．which
高三英语单项填空简单题查看答案及解析
—Who has eaten all the cake, Jim?
—Oh, ________must be your two pet dogs．
A．it B．they C．that D．which
高三英语单项填空中等难度题查看答案及解析
--- Who has eaten all the cake, Jim?
--- Oh, ________must be your two pet dogs.
A．it B．they C．that D．which
高三英语单项填空中等难度题查看答案及解析
All that can be eaten eaten up.
| A．are being | B．has been | C．had been | D．have been |
高三英语单项填空中等难度题查看答案及解析
A Chinese proverb has it that a tower is built when soil on earth ____, and a river is formed when streams come together.
A.accumulates B.accelerates C.accommodates D.associates
高三英语单项填空中等难度题查看答案及解析
In space, there is no up or down. Without the gravity that we experience on Earth, as-tronauts and everything else on a spaceship float freely.
Humans can experience the sense of zero gravity without going into space. How？A zero-gravity flight. When an airplane flies in a lot of parabolas（抛物线）, a man-made zero-gravity environment is set up. Everything in the plane floats, even passengers.
Gravity has an effect on everything from the human body and mind to the behavior of plants and the way machines run. Space travel is expensive and dangerous. But zero-gravity flights let scientists conduct experiments in an environment that mimics（模拟） the conditions of space. On each of its research trip, Zero-G flies about 30 parabolas, each of which creates a period of weightlessness that lasts about 30 seconds. Nikolaus Kuhn of the University of Ba-sel, in Switzerland, flew with Zero-G. He was conducting an experiment about soil and the flow of water on Mars. The Red Planet has about one-third of the gravity that Earth has. This means water flows more slowly on Mars. By making the parabolas less steep, zero-gravity flights can make the feeling of Martian gravity. Flying with Zero-G has been necessary for Kuhn’s research. “It is the only chance, other than going to Mars, to mimic movement of water as it would be on Mars,” he told TFK.
For years, NASA used zero-gravity flights to prepare and train astronauts. “I have not been to space,” Peters of Zero-G says, “But I have been told by astronauts that zero-gravity feels exactly the same.” As humans continue to explore the universe beyond Planet Earth, zero-gravity flights will remain an important and fun tool. “It never gets old,” Peters says “I would do it every weekend for the rest of my life if I could.”
1.Why do scientists set up man-made zero-gravity environment？
A.To study the water on the earth.
B.To offer weightlessness as a business.
C.To take scientists to any other planets.
D.To mimic the condition of space for experiments.
2.How much time of weightlessness can a Zero-G light offer？
A.About 30 seconds. B.About 90 seconds.
C.About 15 minutes. D.About 30 minutes.
3.What feature do the parabolas in Zero-G flights have？
A.The gentler parabolas are, the more satisfied the researchers are.
B.The steeper parabolas are, the less weight the passengers feel.
C.The steeper parabolas are, the more successful the experiments are.
D.The gentler parabolas are, the more quickly water on Mars flows.
4.What can be inferred about the Zero-G flight from the text？
A.It is useless for training astronauts.
B.It has no side effect on human body.
C.It creates a substitutable environment of zero gravity in space.
D.It is cheaper but more dangerous than space travel.
高三英语阅读理解中等难度题查看答案及解析
The year is 2094. It has been announced that a comet (彗星) is heading towards the Earth . Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth.
On 17 July , a piece four kilometers wide enters the Earth’s atmosphere with a massive explosion . About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned.
Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the earth are already dead, but the north won’t escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn’t live through the cold climate that followed and they died out. Will we meet the same end?
1．What is mainly described in the passage?
A．A historic discovery . B．An event of imagination
C．A research on space . D．A scientific adventure.
2．When the first piece hits the South Atlantic, it causes ________ .
A．an earthquake B．damages to cities C．an Earth explosion D．huge waves
3．Why can’t the northern half of the earth escape for long ?
A．Because the land is covered with water
B．Because the light and heat from the sun can not reach the earth .
C．Because people there can not live at the temperature of zero .
D．Because wars break out among countries .
4．By giving the example of dinosaurs , the author tries to prove ________ .
A．animals could not live in the cold climate
B．what happened 65 million years ago was an invented story
C．the human beings will die out in 2094
D．the Earth could be hit by other objects in space
高三英语阅读理解简单题查看答案及解析
The year is 2094. It has been announced that a comet (彗星) is heading towards the Earth. Most of it will miss our plant, but two pieces will probably hit the southern half of the Earth.
On 17 July, a piece four kilometers wide enters the Earth’s atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned.
Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the earth are already dead, but the north won’t escape for long. Because of the explosions, the sun is hidden by clouds of dust, and temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million remain alive.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn’t live through the cold climate that followed and they died out. Will we meet the same end?
1.What is mainly described in the passage?
A. A historic discovery. B. An event of imagination.
C. A research on space. D. A scientific adventure.
2.A. an earthquake B. damages to cities
C. an Earth explosion D. huge waves
3.Why can’t the northern half of the earth escape for long?
A. Because the land is covered with water
B. Because the light and heat from the sun can not reach the earth.
C. Because people there can not live at the temperature of zero.
D. Because wars break out among countries.
4. By giving the example of dinosaurs, the author tries to prove_____________.
A. animals could not live in the cold climate
B. what happened 65 million years ago was an invented story
C. the human beings will die out in 2094
D. the Earth could be hit by other objects in space
5.We may guess that the writer is ______________.
A. worried B. practical C. a scientist D. full of imagination
高三英语阅读理解中等难度题查看答案及解析