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From the ________ look of the boys，I found they were________.
A．satisfying；satisfied B．satisfying；satisfying
C．satisfied；satisfied D．satisfied；satisfying
高二英语单项填空中等难度题查看答案及解析
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Scientists have found what look like caves on Mars, and say they could be protecting life from the planet’s terrible environment.
The first caves discovered beyond the Earth appear as seven mysterious black dots on the pictures sent back by NASA’s Mars Odyssey orbiter. Each as large as a football field, they may be openings into natural caves below the Martian surface.
“If there is life on Mars, there is a good chance you’d find it in caves,” said Jut Wynne, one of the researchers who noticed the features while working on a US Geological Survey Mars Cave Detection Program.
Jonathan Clarke, a geologist with the Mars Society of Australia, yesterday described the discovery as exciting.
One photo taken at night by an infrared imager(红外线成像器) showed one hole to be unusually warm, suggesting hot air trapped during the day is flowing out.
“I said: ‘Wow, that’s a cave’.” Dr. Clarke said excitedly. “People have been looking for these for a long time; now we have found them.”
He agreed such caves would be perfect places to hunt for life escaping from the bitterly cold, radiation-soaked(充满辐射的), dry surface.
“Tiny drops of water could collect inside,” he said. “If there are gases coming out, they could provide energy for a whole range of bacteria. A cave is also a protection from radiation; the surface of Mars is exposed to high levels of space radiation.”
The caves probably formed when tube-shaped lave flows(管状岩浆流) spread across the planet long ago. The outside of the tubes cooled, forming solid walls, while something hotter inside allowed the remaining have to flow out, forming caves.
1.What does the passage mainly talk about?
A. How the caves were formed on Mars.
B. How scientists found these caves on Mars.
C. Caves on Mars may be full of hot air or a sign of life.
D. Scientists have completely recognized the surface of Mars.
2.What can the “cave” be used for according to the scientists?
A. They can protect life from the planet’s terrible environment.
B. They can provide energy for people’s life.
C. They can be used to prevent space radiation
D. Both A and C.
3.We can learn from the passage that .
A. water has already been found on Mars
B. the scientists found all the caves at night
C. it is certain that there is life in these caves
D. the surface of Mars is bitterly cold, radiation-soaked and dry
4.According to the passage, Dr. Clarke was so excited because .
A. such caves could provide energy for life
B. they had finally found the caves on Mars
C. such caves would be perfect places to hunt for life
D. scientists had long been looking for these caves
5.Necessary conditions for life on Mars mentioned in the passage may include .
A. lave and energy
B. water and radiation from space
C. gases and lave
D. water and protection from radiation
高二英语阅读理解中等难度题查看答案及解析
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The boy at the back is the only one of the students who _____ from Africa in our school.
A.was B.were C.is D.are
高二英语单项填空中等难度题查看答案及解析
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After a long journey across the whole of Europe from north to south, they found themselves _________out as well as their clothes.
A.wear B.wore C.wearing D.worn
高二英语单项填空中等难度题查看答案及解析
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A boy was born to a couple after eleven years of marriage. They were a loving couple and loved the boy very much. When the boy was around two years old, one morning the husband saw a medicine bottle open. He was late for work so he asked the wife to cap the bottle and keep it in the cupboard. The mother, preoccupied in the kitchen, totally forgot the matter.
The boy saw the bottle and playfully went to the bottle and, fascinated with its color, drank it all. It happened to be a poisonous（有毒的）medicine meant for adults in small dosages（剂量）. When the child fell down, the mother hurried him to the hospital, where he died. The mother was shocked. She was terrified how to face her husband.
When the father came to the hospital and saw the dead child, he looked at his wife and uttered just four words. The husband just said ‘I am with you, Darling’. The husband's totally unexpected reaction is active behavior. The child is dead. He can never be brought back to life. There is no point in finding fault with the mother. Besides, if he had taken time to keep the bottle away, this would not have happened. No point in attaching blame. She had also lost her only child. What she needed at that moment was comfort and sympathy from the husband. That is what he gave her.
If everyone can look at life with this kind of viewpoint, there would be much fewer problems in the world. Take off all your envies, unforgiveness, selfishness, and fears and you will find things are actually not as difficult as you think. Sometimes we spend time asking who is responsible or whom to blame, whether in a relationship, in a job or with the people we know. By this way we miss out some warmth in human relationship.
1.The uncapped medical bottle was not put back into the cupboard because ________.
A．the husband was careless B．the wife ignored the matter
C．the husband was busy D．the wife wasn’t informed of the matter
2.What do we know about the bottle? ________.
A．It contained poison only for adults B．It was kept in the kitchen
C．It was broken by the child D．It appeared like a nice drink
3.The husband’s attitude towards his wife can be described as ________.
A．optimistic B．confident C．considerate D．generous
4.What did the writer intend to tell us about life? ________.
A．Think of nothing and life will be easy
B．It is always useless finding who is responsible
C．Let go the negative side and we can enjoy life.
D．Life should give way to responsibility
高二英语阅读理解中等难度题查看答案及解析
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From his ______ look, we could see the boy was ______ of the stranger.
A. terrified; terrified B. terrifying; terrifying
C. terrifying; terrified D. terrified; terrifying
高二英语单项填空简单题查看答案及解析
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When very small dinosaur bones were found in a Germany mine, people thought they were from baby dinosaurs. ___1._ Martin Sander's work shows that they were probably fully __2.__ (grow) and belong to the smallest giant dinosaur species ever found.
Growth marks on dinosaur bones are similar __3.__ growth rings on trees. The rings are far apart while the animal is young and growing quickly. __4.__ get closer as growth slows. "It is _5.__ (exact) these tight ring marks that we found in the fossil bones," says Sander. So the fossils must have been from adult animals.
__6.__ was this German dinosaur so much smaller than other giant dinosaurs, which grew up to 45 metres long and weighed as much as a thousand humans?
150 million years ago, most of Germany was underwater. Scientists think that __7.__ water levels rose, there was less and less land and food available. The dinosaur _【小题8__ (force) to adapt and evolved into a smaller animal __8.__ (need) less space and food.
Since 1998, scientists have dug up more than 1,000 dinosaur fossils in the mine. It is one of the few places in the world __9._ the bones and footprints of dinosaurs have been found together.
高二英语完型填空中等难度题查看答案及解析
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. If plants from one habit were moved to the other type of habit, they changed their appearance and _____ the new environment.
A. adapted B adapted to C. suited to D. fit
高二英语单项填空简单题查看答案及解析
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All around them was only the white snow and the night; they were ____________ from the rest of the world and were conscious only of each other.
A．cut out B．cut down C．cut off D．cut in
高二英语单项填空简单题查看答案及解析
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______ the books, he realized they were far from enough and told some of us to share.
A. Having counted B. Counts
C. To have counted D. Counted
高二英语单项填空中等难度题查看答案及解析