When an ice cube melts, it creates a puddle (水坑). When an ice sheet (冰盖)melts, it raises sea levels. It sounds simple, but scientists have debated for decades whether both the Antarctic and Greenland ice sheets actually were shrinking, and how much that melting contributed to rising sea levels.
Now, a new study has provided the best evidence of how the polar ice sheets are responding to our warming world. In the study, an international team of scientists looked at 20 years of' data in the ice sheets collected by 10 satellite missions. The team's conclusion: The Greenland and Antarctic ice sheets both are losing ice overall. The researchers also found that between 1992 and 2011, melt water from those shrinking ice sheets caused sea levels to rise by about 11 millimeters.
Over the 19 years studied, the Greenland ice sheet lost 2.7 trillion metric tons of ice. The Antarctic ice sheet also shrank by about l.3 trillion metric tons. Previously, some scientists disagreed whether the Antarctic sheet, the largest mass of ice in the world, was shrinking or growing or neither.
While the Earth is warming overall, the effect of climate change varies from region to region. Over the last 15 years, for example, scientists have something disagreed over how climate change has affected the polar ice sheets. Many studies found that the sheets lost a lot of ice and that not enough snow fell on the sheets to compensate for the loss. But other studies found that the loss of ice was balanced by the gain in snowfall.
Richard Alley, a glacier scientist at Penn State University, said that many of those studies looked at different areas, and over different time periods. In addition, the studies didn't all use the satellite data in the same way. Those differences made, it difficult to compare the results.
The data in the new study matched time periods and areas. The study also combined measurements from kinds of satellites.
1.Why does the author use a common-sense phenomenon as the beginning?
A.To present the reason for ice sheet melting.
B.To show us the result of a scientific experiment.
C.To give a simple example to introduce the topic.
D.To present a common daily finding obvious to the readers.
2.The researchers reached their conclusion by_____.
A.analyzing the findings of former studies
B.observing the Antarctic and Greenland
C.referring to the data from satellites
D.making measurements in the Antarctic and Greenland
3.What does the underlined phrase "compensate for" in paragraph 4 refer to?
A.Cut down.
B.Lead to．
C.Bring about.
D.Make up for.
4.Which of the following might be the best conclusion for the passage?
A.Ice sheets are shrinking due to global warming.
B.People are suffering from climate change.
C.Rising sea levels makes people live in danger.
D.Shrinking ice has nothing to do with sea levels.
高二英语阅读理解中等难度题
When an ice cube melts, it creates a puddle (水坑). When an ice sheet (冰盖)melts, it raises sea levels. It sounds simple, but scientists have debated for decades whether both the Antarctic and Greenland ice sheets actually were shrinking, and how much that melting contributed to rising sea levels.
Now, a new study has provided the best evidence of how the polar ice sheets are responding to our warming world. In the study, an international team of scientists looked at 20 years of' data in the ice sheets collected by 10 satellite missions. The team's conclusion: The Greenland and Antarctic ice sheets both are losing ice overall. The researchers also found that between 1992 and 2011, melt water from those shrinking ice sheets caused sea levels to rise by about 11 millimeters.
Over the 19 years studied, the Greenland ice sheet lost 2.7 trillion metric tons of ice. The Antarctic ice sheet also shrank by about l.3 trillion metric tons. Previously, some scientists disagreed whether the Antarctic sheet, the largest mass of ice in the world, was shrinking or growing or neither.
While the Earth is warming overall, the effect of climate change varies from region to region. Over the last 15 years, for example, scientists have something disagreed over how climate change has affected the polar ice sheets. Many studies found that the sheets lost a lot of ice and that not enough snow fell on the sheets to compensate for the loss. But other studies found that the loss of ice was balanced by the gain in snowfall.
Richard Alley, a glacier scientist at Penn State University, said that many of those studies looked at different areas, and over different time periods. In addition, the studies didn't all use the satellite data in the same way. Those differences made, it difficult to compare the results.
The data in the new study matched time periods and areas. The study also combined measurements from kinds of satellites.
1.Why does the author use a common-sense phenomenon as the beginning?
A.To present the reason for ice sheet melting.
B.To show us the result of a scientific experiment.
C.To give a simple example to introduce the topic.
D.To present a common daily finding obvious to the readers.
2.The researchers reached their conclusion by_____.
A.analyzing the findings of former studies
B.observing the Antarctic and Greenland
C.referring to the data from satellites
D.making measurements in the Antarctic and Greenland
3.What does the underlined phrase "compensate for" in paragraph 4 refer to?
A.Cut down.
B.Lead to．
C.Bring about.
D.Make up for.
4.Which of the following might be the best conclusion for the passage?
A.Ice sheets are shrinking due to global warming.
B.People are suffering from climate change.
C.Rising sea levels makes people live in danger.
D.Shrinking ice has nothing to do with sea levels.
高二英语阅读理解中等难度题查看答案及解析
Many people believe that all ice cubes are created equal, but they are not. At least that’s what the folks at California’s Glace Luxury Ice Company would like us to believe. The Davisbased company says that the ice cubes they make are healthier and last longer than the ones that we throw into our drinks on a daily basis. What’s more, the company also says that their ice cubes do mot leave behind an aftertaste(余味)in drinks, like regular ones do.
In order to create these unique ice cubes, Glace Luxury begins with water that has been rid of the hazardous impurities(杂质)that the company says can lead to cancer and exist in regular ice. They then freeze it in large blocks. Once ready, the ice is carved into perfect cubes and each cube measures 2.5 inches across. Besides being healthier, these ice cubes apparently also take longer to melt. The company says that each ice cube can last up to 30 minutes.
Of course, those ice cubes do not come cheap. Those that wish to have a taste of this “tasteless” frozen perfection will have to pay $325USD for a bag of 50 ice cubes. That comes to $6.50USD for a single cube of ice!
The unique product is the brainchild of Robert Sequeira, a former business school lecturer who said that he wanted to establish a profitable business that could be easily scaled. Given that he can make as mush Glace Luxury ice as he needs for as little as $0.12USD per cube, he thinks that the idea certainly meets the standard. Now, if he can find that the few people can afford to buy this Glace Luxury ice, life would be great!
1.People at California’s Glace Luxury Ice Company probably want consumers to believe that _____.
A. ice cubes are healthy for people to use
B. their ice cubes add tastes to drinks
C. all ice cubes are created the same
D. their ice cubes are different
2.What does the underlined word “hazardous” in paragraph 2 mean?
A. Active B. Regular C. Dangerous D .Powerful
3.Compared with regular ice cubes, the ice cubes created by Glace Luxury Ice Company_____.
A. taste much bette
B. look much more beautiful
C. have more different shapes
D. are healthier and melt more slowly
4.What does the author think of the ice cubes created by Glace Luxury Ice Company?
A. They will be a big success
B. They are too costly to make.
C. They are just regular ice cubes.
D. They are too expensive for consumers
高二英语阅读理解中等难度题查看答案及解析
Many people believe that all ice cubes are created equal, but they are not. At least that’s what the folks at California’s Glace Luxury Ice Company would like us to believe. The Davisbased company says that the ice cubes they make are healthier and last longer than the ones that we throw into our drinks on a daily basis. What’s more, the company also says that their ice cubes do mot leave behind an aftertaste(余味)in drinks, like regular ones do.
In order to create these unique ice cubes, Glace Luxury begins with water that has been rid of the hazardous impurities(杂质)that the company says can lead to cancer and exist in regular ice. They then freeze it in large blocks. Once ready, the ice is carved into perfect cubes and each cube measures 2.5 inches across. Besides being healthier, these ice cubes apparently also take longer to melt. The company says that each ice cube can last up to 30 minutes.
Of course, those ice cubes do not come cheap. Those that wish to have a taste of this “tasteless” frozen perfection will have to pay $325USD for a bag of 50 ice cubes. That comes to $6.50USD for a single cube of ice!
The unique product is the brainchild of Robert Sequeira, a former business school lecturer who said that he wanted to establish a profitable business that could be easily scaled. Given that he can make as mush Glace Luxury ice as he needs for as little as $0.12USD per cube, he thinks that the idea certainly meets the standard. Now, if he can find that the few people can afford to buy this Glace Luxury ice, life would be great!
1.People at California’s Glace Luxury Ice Company probably want consumers to believe that _____.
A. ice cubes are healthy for people to use
B. their ice cubes add tastes to drinks
C. all ice cubes are created the same
D. their ice cubes are different
2.What does the underlined word “hazardous” in paragraph 2 mean?
A. Active B. Regular C. Dangerous D .Powerful
3.Compared with regular ice cubes, the ice cubes created by Glace Luxury Ice Company_____.
A. taste much bette
B. look much more beautiful
C. have more different shapes
D. are healthier and melt more slowly
4.What does the author think of the ice cubes created by Glace Luxury Ice Company?
A. They will be a big success
B. They are too costly to make.
C. They are just regular ice cubes.
D. They are too expensive for consumers
高二英语阅读理解中等难度题查看答案及解析
概要写作
阅读下面短文，根据其内容写一篇60词左右的内容概要。
With global warming and melting ice, it isn’t easy being a polar bear anymore. Some studies have predicted that polar bears could die out by the end of the century. The good news is not all researchers think the bears are absolutely disappearing. Scientists at the American Museum of Natural History(AMNH) have published a new paper indicating that things might not be as bad for polar bears as some scientists expect.
To understand the reason for the researchers’ cautious optimism, we must first understand the factors that are threatening the polar bear’s existence. Polar bears consume a diet of mainly young seals. In order to hunt these seals, polar bears need to rest at the top of sea ice---the same ice that is increasingly melting for most of the year thanks to climate change. In another 50 years, experts expect that the Arctic will be too warm for sea ice to form for half of the year, leaving polar bears without a reliable food source and in serious danger of starvation.
As it turns out, alternative food sources for the polar bears aren’t completely out of the question. For as long as biologists have tailed after the animals, they’ve seen polar bears eating animals found on land like caribou(驯鹿) and snow geese---as well as the snow geese’s eggs.
Can polar bears actually survive off these alternative food sources for long periods of time? To figure this out, researchers calculated the nutrients that a caribou and snow geese diet would provide. They found that even adult male polar bears would be able to obtain more calories than they would burn in hunting these meals. Moreover, the food would provide the food necessary to avoid starvation during the summer months.
Unfortunately, not all polar bears have tended to seek food on land. That said, the researchers expect that necessity would push more polar bears to hunt on land to avoid starvation. They also expect that the bears could learn from their fellow bears how to hunt on land until the practice becomes second nature.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
高二英语书面表达中等难度题查看答案及解析
阅读下面短文, 根据其内容写一篇60词左右的内容概要。
With global warming and melting ice, it isn’t easy being a polar bear anymore. Some studies have predicted that polar bears could die out by the end of the century. The good news is not all researchers think the bears are absolutely disappearing. Scientists at the American Museum of Natural History(AMNH) have published a new paper indicating that things might not be as bad for polar bears as some scientists expect.
To understand the reason for the researchers’ cautious optimism, we must first understand the factors that are threatening the polar bear’s existence. Polar bears consume a diet of mainly young seals. In order to hunt these seals, polar bears need to rest at the top of sea ice---the same ice that is increasingly melting for most of the year thanks to climate change. In another 50 years, experts expect that the Arctic will be too warm for sea ice to form for half of the year, leaving polar bears without a reliable food source and in serious danger of starvation.
As it turns out, alternative food sources for the polar bears aren’t completely out of the question. For as long as biologists have tailed after the animals, they’ve seen polar bears eating animals found on land like caribou(驯鹿) and snow geese---as well as the snow geese’s eggs.
Can polar bears actually survive off these alternative food sources for long periods of time? To figure this out, researchers calculated the nutrients that a caribou and snow geese diet would provide. They found that even adult male polar bears would be able to obtain more calories than would burn in hunting these meals. Moreover, the food would provide the food lecessary to avoid starvation during the summer months.
Unfortunately, not all polar bears have tended to seek food on land. That said, the researchers expect that necessity would push more polar bears to hunt on land to avoid starvation. They also expect that the bears could learn from their fellow bears how to hunt on land until the practice becomes second nature.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
高二英语书面表达中等难度题查看答案及解析
Walking down a path through some woods in Georgia, I saw a water puddle (水坑) ahead on the path. I walk around to the side of the path that wasn’t covered by water and ______. As I reached the puddle, I was suddenly attacked! Yet I did nothing for it was so ______. I stepped back and my attacker stopped attacking me. ____
attacking more, he flied in the air with its graceful ______ in front of me. Had I been hurt, I wouldn’t have found it amusing but I was unhurt, it was ______ and I was laughing. After all, I was being attacked by a butterfly!
I took a step forward, and my attacker rushed me again. He pushed and _____
me in the chest with his head and body over and over again with all his might. It’s just not everyday that ______ is attacked by a butterfly, so I stopped to find out the ______. My attacker moved back as well to ______ on the ground. That’s when I discovered why my ______ was charging me only moments earlier. He had a mate beside the puddle ______ he landed and she was dying.
Sitting close beside her, he opened and closed his wings as if to fan her. I could only ______ the love and courage of that butterfly in his concern for his mate, even though she was ______ dying and I was so large. He did so just to give her those extra few ______ moments of life. Now I knew why and what he was ______. I couldn’t do anything other than reward him by changing my ______ to the more difficult side of the puddle. He had truly ______ those moments to be with her, undisturbed. I cleaned the mud from my boots and left.
Since then, I’ve always tried to remember the ______ of that butterfly whenever I see huge ______ facing me. I use that butterfly’s courage as an inspiration to ____
myself that good things are worth striving for.
1.A. mud B. grass C. stone D. earth
2.A. unnecessary B. unpredictable C. unbelievable D. understandable
3.A. Or rather B. Or so C. Instead of D. Other than
4.A. feet B. hands C. feather D. wings
5.A. funny B. surprising C. shocking D. exciting
6.A. grasped B. hit C. took D. seized
7.A. it B. ones C. one D. that
8.A. reason B. purpose C. origin D. direction
9.A. run B. fly C. stand D. land
10.A. fighter B. attacker C. competitor D. pet
11.A. what B. which C. where D. why
12.A. understand B. give C. remember D. admire
13.A. doubtfully B. clearly C. eventually D. actually
14.A. previous B. precise C. precious D. preferable
15.A. fighting for B. looking for C. struggling with D. providing for
16.A. goal B. way C. opinion D. attitude
17.A. enjoyed B. left C. earned D. remembered
18.A. competition B. intelligence C. determination D. courage
19.A. barriers B. equals C. rivers D. deaths
20.A. request B. permit C. remind D. forbid
高二英语完形填空极难题查看答案及解析
“When an American asks me this question, it’s like a wall of ice crashing down between us.” my Moscow-born friend Galina said. The question is “How are you?”.
The answer Americans give, of course is, “Fine.” But when Russians hear this they think one of two things: you are experiencing a rare moment of fineness or you are lying.
Ask a Russian, “How are you?” and you will hear, for better or worse, the truth. I have experienced many painful minutes of silence after my grandmother made her stock response: “Terrible,” to which she might add, “Why? Because being old is terrible and I am very old.”
“‘Fine’ makes Russians think that Americans have no soul,” I explained recently to an American-born friend. “That they just want to go home, eat a frozen dinner in front of the TV, and wait out the hours before going to work to make money again.” He laughed, “You know, there’s something to that.”
The thing most Russians don’t realize is that, in English, “How are you?” isn’t a question at all, but a form of “hi”, like the Russian “privyet!”
Psychologists at the University of Michigan have shown that, while Russians are, indeed, easier to be depressed than Americans, their open acceptance of bad experiences might be healthier.
Recently, when I looked through a few American guides on traveling to Russia, I was disappointed to find that they all suggested that tourists adopt the American approach to “How are you”.
1.When you ask a Russian “how are you” the Russian will ________.
A. answer “fine” B. tell you the truth
C. make no answer D. get angry and walk away
2.If an American answers “fine” to the question “how are you”, the Russian will think ______.
A. he is not honest B. he will go home
C. he likes watching TV D. he is living a bad life
3.We can infer Russians’ answer to “how are you” can make Americans feel ________.
A. happy B. angry
C. puzzled D. touched
高二英语阅读理解中等难度题查看答案及解析
Last November, I created the Gustine Traveling Library. I ________ an old ice cream cart into a portable library. I hoped to get kids outside, reading books again ________ staying inside all day playing on _______ equipment.
When I first started the ________, I had about 100 books. Now, after ten months, I have received over 2,000 ________ books, and I travel to neighboring cities in California.
One day I was in a park in Gustine, and a little girl saw my cart. She ran up, ________ it was an ice cream cart, and was ________ when I told her it held books. She began to read the books. Then her parents called her, and the little girl started to ________ to me the book that had a cartoon character — Elmo on the cover ________. When I told her she was allowed to keep it, she cried out with ________, “Mom, I got Elmo!” That experience inspires me to keep ______the Traveling Library so more kids can enjoy reading great books. I am now helping other towns in California ________ their own traveling libraries.
The Traveling Library has been acknowledged by famous ________. Former President George Bush sent ________ letters and photos of him to the Library for its ________ to helping others. President Trump ________ an award to my hometown in honor of my ________ with the Traveling Library this fall.
I use the Traveling Library as an ________ set to youth- if I can create something out of a run-down ice cream cart, then so can you! You can make a ________ by donating books, helping youth love reading or doing other ________ jobs.
1.A.translated B.transported C.transplanted D.transformed
2.A.rather than B.because of C.other than D.regardless of
3.A.artistic B.realistic C.electronic D.dynamic
4.A.project B.event C.item D.course
5.A.rejected B.used C.donated D.written
6.A.hoping B.pretending C.thinking D.finding
7.A.disappointed B.surprised C.embarrassed D.bored
8.A.hand back B.pay back C.hold back D.call back
9.A.doubtfully B.deliberately C.unexpectedly D.unwillingly
10.A.regret B.shock C.joy D.fear
11.A.expanding B.updating C.changing D.strengthening
12.A.settle down B.put out C.take over D.set up
13.A.politicians B.millionaires C.librarians D.scholars
14.A.posted B.copied C.signed D.attached
15.A.attention B.devotion C.purpose D.relation
16.A.received B.made C.shared D.presented
17.A.service B.connection C.communication D.agreement
18.A.excuse B.exercise C.experience D.example
19.A.difference B.promise C.decision D.choice
20.A.funny B.voluntary C.academic D.complex
高二英语完形填空中等难度题查看答案及解析
Welcome to the Ice Bucket Challenge. The challenge is simple: when , one either pours a bucket of icy water over his or her head or donates $100 to the ALS Association.
A. to challenge B. challenged
C. you challenged D. having challenged
高二英语单项填空中等难度题查看答案及解析
A new report says sea ice in the Arctic Ocean is melting more quickly than expected. American scientists say the ice is melting even faster than computer programs had estimated.
Scientists know that climate change has a major effect on the Arctic Ocean partly because sea ice is disappearing. They also know that areas of open seawater are expanding. Such areas are known to take in sunlight and increase temperatures. Scientists say this has helped to cause the loss of the Arctic’s ice cover.
For the study, the American scientists compared eighteen computer programs with observations made by satellites and other instruments. The Intergovernmental Panel on Climate Change used the computer programs to prepare its 2007 estimates of climate change.
The computer programs gave estimates of the amount of ice in the Arctic Ocean in the month of September. September is when the Arctic has the least ice, after the warm, summer months. The computer estimates suggested an ice loss of two and a half percent for every ten-year period between 1953 and 2006.
Newer studies of the Arctic have used information gathered by aircraft, satellites and ships. This information showed a loss of September ice cover of almost eight percent for every ten-year period between 1953 and last year. This means the ice is disappearing about thirty years faster than the computer programs estimated.
The scientists say the programs might not have recognized the full effect of increased carbon dioxide and other gases in Earth’s atmosphere. They say their study suggests the gases may have more of an effect than had been thought.
1.It is reported that sea ice in the Arctic Ocean is melting more quickly than expected mainly because _________.
A. climate change B. sea ice’s disappearance
C. seawater’s expansion D. the loss of the Arctic’s ice cover
2. How did the scientists draw the conclusion that sea ice in the Arctic Ocean is melting more quickly than expected?
A. The scientists have been observing the Arctic Ocean for many years.
B. The scientists have compared the computer programs with observation made by satellites and other instruments.
C. The scientists have figured out many numbers with the help of computer.
D. The scientists have found that the seawater take in sunlight and increase temperatures.
3.If the ice melts at the present speed, by the end of this century the ice loss in the Arctic Ocean will be _________ according to newer studies.
A. 22.5% B. 35% C.72% D. 100%
4.Which of the following is TRUE according to the passage?
A. The figures of the computer estimates are wrong.
B. Scientists study climate change through studying sea level.
C. Newer studies show gases may have more effect on sea ice in the Arctic Ocean.
D. The ice is melting even faster than satellites have estimated.
5.This report mainly warns human to _________.
A. prevent the sea ice in the Arctic Ocean from melting any more
B. pay more attention to the loss of the Arctic’s ice cover
C. take necessary steps to protect the environment of our earth
D. stop summer sea ice in the Arctic from disappearing so fast
高二英语阅读理解简单题查看答案及解析