_______ the fact that three quarters of the earth’s surface is covered with water, we can say that it is a ________ planet.
| A．Given; water-covering | B．having been given; water-covered |
| C．Considering; water-covered | D．To consider; water-to-cover |
高三英语单项填空中等难度题
_______ the fact that three quarters of the earth’s surface is covered with water, we can say that it is a ________ planet.
| A．Given; water-covering | B．having been given; water-covered |
| C．Considering; water-covered | D．To consider; water-to-cover |
高三英语单项填空中等难度题查看答案及解析
Some scientists believe that one of the most intelligent beings on Earth is in fact the octopus (章鱼).
Octopuses usually live at the bottom of river mouths and seas-areas which are not attractive to researchers. They are not social animals so it can be hard to study their interaction with others. And the octopus’ intelligence is not easy for humans to understand. When we observe some animals such as rats or dogs, we can often understand their behavior. Octopuses，however can seem like aliens (外星人). Scientists need to have a lot of imagination to understand what an octopus is thinking!
In the 1950s, the US Air Force sponsored scientists to study the way octopuses use their brains. They hoped that they could use this knowledge to help them build better computers. However, their brains were so complex that the scientists felt it of no significance to continue with it. Octopuses have a very complex nervous system and recent research suggests that they have some of their intelligence inside each arm, which means that each arm can “think” for itself. It also appears that they have a good memory, perhaps similar to a cat’s.
Perhaps the most striking thing about octopuses is their ability to change their color and body pattern. They do this to camouflage themselves to avoid their enemies and also to communicate with others. They can completely change their appearance in less than a second. It can change its skin to look like rocks, sand or planktron (浮游生物).
Some scientists have even suggested that these different patterns and colors are in fact a very hard language-and that each design is a different verb，adjective or noun. But nobody has been able to work out what they might be saying. There’s a long way to go to get to know the octopus completely.
1.What can we infer about the octopus’ intelligence from Paragraph 2?
A.It does not attract scientists. B.Little has been known about it.
C.It is equal to the cat’s or dog’s. D.Much has been done about it.
2.What can we say about scientists’ study on the octopus in the 1950s?
A.They had to give it up eventually. B.They used computers to help.
C.They found its arms could think. D.They judged it lived like a cat.
3.What does the underlined word “camouflage” in Paragraph 4 probably mean?
A.Relax. B.Strengthen. C.Hide. D.Express.
4.What does the author think of the octopuses?
A.They are the smartest animals. B.They’re easy to be seen in the sea.
C.It is useful to copy their language. D.It is difficult to understand them.
高三英语阅读理解中等难度题查看答案及解析
Water, which covers about 74 percent of the earth’s surface, is man’s most precious resource. Without it we cannot live. Clean water keeps us alive; polluted water means disease and death. Keeping our water pure is by no means an easy task but it is something that must be done.
Hong Kong once prided herself on being the “Fragrant Harbour”. However, these days, it is not certain if Hong Kong’s harbour could still be called “fragrant”. For, like many other places, Hong Kong has not been spared water pollution. A visit to Tolo and Victoria Harbour, or any of the beaches in Hong Kong is enough to make one aware of the ugly truth that Hong Kong waters are indeed polluted.
The great threat to our water is bacteria pollution. Another great source of water pollution is poisonous chemicals. These substances, which are found in industrial waste and agricultural pesticides, make up unseen dangers that enter biological food chains.
Pollution control is a continuing problem for the government. It is believed that the most effective form of control is legislation（立法）. Most importantly, the present laws on pollution should be given more force. On the other hand, no amount of legislation can effectively control pollution unless those concerned are properly educated about the danger posed by pollution.
While a great majority of Hong Kong citizens and residents seem to be greatly concerned about ways to control water pollution, it is discouraging to note that there are, in our midst, some people who remain apathetic（无动于衷）about the problem. In a recent radio programme conducted on what people in the streets thought about the water pollution problem, one apparently unconcerned person said, “What do I care about water pollution? I don’t drink polluted water. As long as the water I drink is not polluted, I’m not bothered. Water pollution is too big a problem and let’s leave it to the government.”
If all residents in Hong Kong will take such an indifferent attitude, all the government’s attempts to control pollution, let alone the anti-pollution legislation, will prove useless. The best form of pollution control each citizen can employ is to be aware of his surroundings. We hope that someday, the problem of water pollution in Hong Kong will cease to alarm us.
1.By the underlined sentences, the writer wants to show that ______.
A. we should not use polluted water
B. it is our responsibility to keep our water clean and safe
C. clean water is vitally important to the survival of human beings
D. water is abundant but very expensive
2.What can you infer from the second paragraph?
A. Hong Kong indeed deserves the name.
B. Hong Kong never deserves such a name.
C. Hong Kong can’t avoid the damage of pollution.
D. Hong Kong has failed to live up to such reputation.
3.The writer quotes the words in the programme to show us that a block to the solution of the problem is _________.
A. people’s lack of education
B. people’s I-don’t-care attitude
C. people’s wait-and-see attitude
D. people’s over-dependence on the government
4.In the final analysis, the best approach to the problem of water pollution is ________.
A. legislation
B. rapid development of modern science
C. mass education
D.everybody taking care of his own surroundings
高三英语阅读理解困难题查看答案及解析
As we all know, two thirds of the earth’s surface is water, ___ a lot of fish.
| A．provided | B．providing | C．which provides | D．it provides |
高三英语单项填空中等难度题查看答案及解析
The ocean covers over 70 percent of the surface of Earth today, but over 3 billion years ago the entire planet may have been covered in water. To investigate what our planet was like billions of years ago, a team of researchers turned to indirect methods of analysis at a geological site in the Australian Outback known as Panorama(全景画) in the Pilbara Craton. Today, the region is 100 kilometers inland, but 3.2 billion years ago, it was deep underwater.
In fact, there were also once ancient hydrothermal vents (热水口) there where seawater bubbled up through the ocean floor. “There are no samples of really ancient ocean water lying around, but we do have rocks that interacted with that seawater and remembered that interaction,” lead author Benjamin Johnson, an assistant professor at Iowa State University, said in a statement.
The researchers collected over 100 of these rock samples and found something peculiar in them: a slightly higher amount of a particular isotope (同位素) of oxygen. The vast majority of oxygen on Earth is Oxygen-16 and contains eight protons (质子) and eight neutrons. However, about 0.20 percent is Oxygen-18.
Samples from Australia show the region’s ancient water contained more Oxygen-18 than present times. Since continents are covered in clay-rich soil that is efficient at trapping Oxygen-18, the team suggests that without continents covered in soil, more Oxygen-18 would have been present in the ocean. Their discovery indeed suggests there wasn’t much dry land available 3.24 billion years ago.
“There’s nothing in what we’ve done that says you can’t have tiny, micro -continents sticking out of the oceans,” added co-author Boswell Wing. “We just don’t think there were global-scale formations of continental soils like we have today.” The researchers don’t know when and how continents began to emerge out of the ocean but they plan to investigate “younger” rock formations to piece together a more precise timeline.
1.Where is the research site?
A.In a region deep underwater.
B.In a region off Australia.
C.In a region inland Australia.
D.In a region outside the Pilbara Craton.
2.What do the underlined words “interact with” in Paragraph 2 mean?
A.Have an effect on each other. B.Have a one-way effect.
C.Have a mysterious effect. D.Have a negative effect.
3.What’s the researchers’ conclusion after analyzing samples from Australia?
A.Modern earth must have been a water world.
B.Modern earth must have been a continental world.
C.Ancient earth may have been a water world.
D.Ancient earth may have been a continental world.
4.What’s the researchers’ next focus of the study?
A.To research continental soils’ formations.
B.To research the ocean’s formations.
C.To research “older” rock formations.
D.To research “younger” rock formations.
高三英语阅读理解中等难度题查看答案及解析
We know more about the surface of the planet Mars than we know about what is at the bottom of Earth’s oceans.
Until recently, scientists had mapped only about 20 percent of the sea floor. But our knowledge of the deep seas is changing because of information from satellites. Scientists have produced a new map that provides a detailed picture of the oceans. The map is expected to help oceanographers, industry and governments.
The new map is twice as detailed as the map made 20 years ago. David Sandwell is a geophysics professor at the Scripps Institution of Oceanography at the University of California. He and other scientists worked on the mapping project. He says they turned to space to look deeper into the ocean. He spoke to VOA on SKYPE.
“The way we’re doing that is to use a satellite altimeter (高度计), a radar to map the topography (地貌) of the ocean surface. Now that seems sort of strange that you’d map the topography of the ocean surface when you really want to get at the sea floor. But, the ocean surface topography has these bumps and dips due to gravitational effects that mimic what’s on the sea floor.”
The scientists collected and studied information from two satellites. Some of the data came from the European Space Agency’s Cryo-2 satellite. It was placed in Earth’s orbit to watch sea ice. The other satellite is the American space agency’s Jason-1. It is studying the surface of the oceans. Scientists combined the satellite data with images gathered by sonar ( 声呐：利用声波探测水下物体的装置或系统) equipment on ships. Sonar works by sending sound waves through the water. When the sound waves hit an object, its presence is confirmed.
“That enables us to look at smaller-scale features and also features that are buried by sediments in the ocean basins.”
The new map shows the sea floor as it has never been seen before. It shows thousands of underwater mountains and places where continents pulled apart. It shows where earthquakes were active many years ago. They all are buried deep underneath the ocean floor.
In one place, three mountain ridges join at the same area. Huge tectonic (构造的) plates can be seen clearly there.
1.The passage is likely to _____.
A. be an advertisement B. appear on VOA
C. make a comment on radar D. appear on SKYPE
2.What will be mentioned in the following paragraph, according to the last paragraph? _____.
A. The detailed information about the place.
B. The more important thing in the ocean.
C. The things buried in the ocean.
D. Scientists told SKYPE they will explore at the same area.
3.Scientists collected and studied information by _____.
A. the European Space Agency’s Cryo-2 satellite
B. the American space agency’s Jason-1
C. sonar equipment on ships
D. the Cryo-2 and the Jason-1
4. What’s the best title of the passage? _____.
A. Scientists Create New Maps of Ocean Floor
B. Scientists Knows More Oceans Than Mars
C. Oceans Will Provide Us With Maps
D. People Knows Easily About Mars
高三英语阅读理解困难题查看答案及解析
Statistics show that nearly three-quarters of 30-year-of Italian males still live at their parents’ home.
The Italian（36） grows up thinking his other is the Virgin Mary, and so （37） he thinks he is Jesus, or God’s gift to the world. It is not （38） that Italian males find it very difficult to （39） home. Their mothers make sure that their（40） are so cosseted（宠爱）that they have no real wish to leave. Even when they are （41）, they continue to behave as if they aren’t, taking their（42） home at least once a week for their mother（43） and iron.
They （44） treating home as a hotel, just like teenagers in northern European countries. Why give up a life of luxury and financial（45） with a woman who treats you as the Son of God for an （46） future with a woman（47） might ask you to do things around the （48） that you have never （49） to do, like making your bed or drying the dishes?
In fact young Italian males (50) no choice. There is little tradition of them(51) away from home during their student years, and it is(52) for them to find decent jobs until they are in their thirties;(53) the absence of suitably priced accommodation makes it practically(54) for them to afford to move out. They find themselves(55) in a trap: wanting to live on their own, but unable to leave the nest and under fire for not doing so.
1.A．child B．male C．student D． female
2.A．hopefully B．naturally C．happily D．generally
3.A．surprising B．exciting C．easy D．convenient
4.A．go B．come C．leave D．return
5.A．sons B．sisters C．friends D．children
6.A．married B．well C．tried D．ill
7.A．books B．clothes C．cars D．bicycles
8.A．make B．cook C．wash D．see
9.A．turn up B．end up C．get up D．pick up
10.A．difficulty B．problem C．trouble D．security
11.A．bright B．uncertain C．splendid D．prornising
12.A．when B．who C．what D．which
13.A．house B．corner C．place D．school
14.A．remembered B．forgot C．stopped D．learnt
15.A．like B．prefer C．hate D．have
16.A．going B．living C．putting D．getting
17.A．unusual B．usual C．worried D．nervous
18.A．but B．when C．while D．where
19.A．different B．impossible C．important D．casual
20.A．dressed B．convinced C．determined D．caught
高三英语完型填空简单题查看答案及解析
Some of this heat near the earth's surface _________ make electricity.
| A．is used for | B．is used to |
| C．gets used to | D．used to |
高三英语单项填空简单题查看答案及解析
Many of us have wondered what Earth is like beneath the surface. So have writers and scientists. In French novelist Jules Verne’s masterpiece Journey to the Center of the Earth, explorers go down to Earth’s center and discover amazing wonders.
But in real life, human beings haven’t even come close to the planet’s core (核心). The core is over 6,000 km down. The deepest hole ever created, according to the BBC, is the Kola Superdeep Borehole in Russia, which only goes 12.3 km down.
So how do we know about everything down below without any samples？
One good way to start is to think about the Earth’s density (密度), Simon Redfern of the University of Cambridge in the UK told the BBC.
“The density of the material on Earth’s surface is much lower than the average density of the whole Earth, so that tells us there’s something that has greater density,” Redfern said.
The challenge is to find out which heavy materials the core is made of. And the main material scientists have found is iron. The idea is that when Earth formed 4.5 billion years ago, a lot of iron made its way down to the core, taking up about 80 percent of it. Today scientists are still working on finding out which other materials the core could be made up of.
You might also wonder how we know the size of the core. There’s a one-word answer: seismology (地震学).
When an earthquake happens, seismic stations around the world record the shockwaves it sends throughout the planet. It’s like hitting one side of the planet with a huge hammer and listening on the other side for the noise.
Early research found that some shockwaves, called “S-waves”, went missing. S-waves can only travel through solid material, but not through liquid, so they must have found something molten in Earth’s center. By following the S-waves’ paths, scientists found out that rocks became liquid around 3,000 km down.
There are still many questions about the Earth’s core to answer. But the study of the dark world below isn’t just for scientists’ curiosity.
The movement of Earth’s molten iron core builds up a powerful magnetic (有磁力的) field. It protects us from radiation from the sun and is needed for compasses and GPS systems to work.
So perhaps none of us will ever set eyes on the core, but it’s good to know it’s there.
1.The author mentions Jules Verne’s novel Journey to the Center of the Earth in the first paragraph to .
A. discuss the possibility of going down to Earth’s center
B. show how much humans have discovered about Earth
C. paint a picture in our imagination of the dark world below
D. show humans’ deep interest in Earth’s center
2.We can learn from the article that “S-waves” .
A. are often used to predict earthquakes
B. cannot travel through liquid material
C. are the most noticeable shockwaves produced by earthquakes
D. can travel most rapidly at 3,000 kilometers below Earth’s surface
3.We can infer from the last three paragraphs that .
A. research into Earth’s core has hardly made any progress in recent years
B. improvements in GPS systems could help people find out more about Earth
C. Earth’s core helps to protect humans from harm
D. scientists are likely to reach Earth’s center within dozens of years
高三英语阅读理解中等难度题查看答案及解析
from the moon, our earth with water seventy percent of its surface, appears a blue ball.
A. Seen; covered B. Seen; covering
C. To see; covering D. Seeing; covered
高三英语单项填空中等难度题查看答案及解析