Wolves strike fear into the hearts of many species, humans included. Our fear of them has brought them to the edge of dying out, as we have cruelly killed them as competitors and trouble-makers. But researchers are discovering that the very fear they put into prey(被捕食者)species is exactly what helps make ecosystems(生态)healthy.
Yellowstone National Park is a typical example of just how wolves can help repair an ecosystem. An October 2018 study analyzed 40 years of research on large animals inside the park.
“Yellowstone has benefited from the reintroduction of wolves in ways that we did not anticipate, especially the complexity of biological interactions(互动) in the park,” explained Mark Boyce, a professor in the Department of Biological Sciences. “We were really surprised at that and we’ d never have seen these responses if the park hadn’t adopted ecological-process management—allowing natural ecological processes to take place with least human intervention.”
After the wolves were re-introduced at Yellowstone, willow and cottonwood trees increased in number. The population of bears and bison also rose and what was once a ruling deer-wolf interaction is now more diverse.
To learn more about just how wolves are beneficial, a short documentary from Quest explains how the presence of wolves influences the behavior of deer, which eventually makes entire ecosystems more biologically diverse and healthy. In this documentary, biologist Aaron Wirsing explored why wolves and other top predators (捕食者) were needed for diverse ecosystems to develop. Using a simple video camera, Wirsing is gaining a unique view point on predator-prey relationships and changing the way we think about wolves.
The research is one more piece of evidence for why protecting these top predators is important not just for wolves as a species, but for hundreds of species at every level of an ecosystem. The fear they bring along may be the very angle that helps save them from dying out.
1.What does the underlined word “anticipate” in paragraph 3 probably mean?
A. Expect. B. Understand.
C. Notice. D. Accept.
2.For what purpose was a documentary made?
A. To introduce how wolves behave in the wild.
B. To show how wolves benefit from ecosystems.
C. To record how Aaron Wirsing observed wolves.
D. To study what good wolves can do to ecosystems.
3.What is the significance of the research?
A. It proves wolves feed on hundreds of species.
B. It helps prove the importance of protecting wolves.
C. It shows the complex relationships between species.
D. It provides evidence that wolves are endangered animals.
4.What is the main idea of the passage?
A. The fear of wolves is beneficial to ecosystems.
B. The fear of wolves put them in danger of disappearing.
C. Yellowstone National Park owes its healthy ecosystems to wolves.
D. The introduction of wolves in Yellowstone National Park is a success.
高三英语阅读理解中等难度题
Wolves strike fear into the hearts of many species, humans included. Our fear of them has brought them to the edge of dying out, as we have cruelly killed them as competitors and trouble-makers. But researchers are discovering that the very fear they put into prey(被捕食者)species is exactly what helps make ecosystems(生态)healthy.
Yellowstone National Park is a typical example of just how wolves can help repair an ecosystem. An October 2018 study analyzed 40 years of research on large animals inside the park.
“Yellowstone has benefited from the reintroduction of wolves in ways that we did not anticipate, especially the complexity of biological interactions(互动) in the park,” explained Mark Boyce, a professor in the Department of Biological Sciences. “We were really surprised at that and we’ d never have seen these responses if the park hadn’t adopted ecological-process management—allowing natural ecological processes to take place with least human intervention.”
After the wolves were re-introduced at Yellowstone, willow and cottonwood trees increased in number. The population of bears and bison also rose and what was once a ruling deer-wolf interaction is now more diverse.
To learn more about just how wolves are beneficial, a short documentary from Quest explains how the presence of wolves influences the behavior of deer, which eventually makes entire ecosystems more biologically diverse and healthy. In this documentary, biologist Aaron Wirsing explored why wolves and other top predators (捕食者) were needed for diverse ecosystems to develop. Using a simple video camera, Wirsing is gaining a unique view point on predator-prey relationships and changing the way we think about wolves.
The research is one more piece of evidence for why protecting these top predators is important not just for wolves as a species, but for hundreds of species at every level of an ecosystem. The fear they bring along may be the very angle that helps save them from dying out.
1.What does the underlined word “anticipate” in paragraph 3 probably mean?
A. Expect. B. Understand.
C. Notice. D. Accept.
2.For what purpose was a documentary made?
A. To introduce how wolves behave in the wild.
B. To show how wolves benefit from ecosystems.
C. To record how Aaron Wirsing observed wolves.
D. To study what good wolves can do to ecosystems.
3.What is the significance of the research?
A. It proves wolves feed on hundreds of species.
B. It helps prove the importance of protecting wolves.
C. It shows the complex relationships between species.
D. It provides evidence that wolves are endangered animals.
4.What is the main idea of the passage?
A. The fear of wolves is beneficial to ecosystems.
B. The fear of wolves put them in danger of disappearing.
C. Yellowstone National Park owes its healthy ecosystems to wolves.
D. The introduction of wolves in Yellowstone National Park is a success.
高三英语阅读理解中等难度题查看答案及解析
“You totally missed out!” This sentence strikes fear in the hearts of teenagers more than almost anything else. In fact, missing out on something bothers most teenagers so much that there is even a special word for that sick feeling: FOMO. 1. FOMO, which was added to the Oxford English Dictionary in 2013, refers to that anxious feeling people get when they realize they are not attending a social event.
2. In fact, one survey found that two-thirds of people in this age group admitted to experiencing FOMO regularly. If you ask teenagers whether they experience social media anxiety, most would answer no. But what they do not realize is that if they are stressed or worried about what they see online, then they are possibly experiencing FOMO, especially if they are online a lot.
Then how to handle the problem of FOMO? Of course, turning off the technology seems like a natural cure for FOMO. 3. Teenagers may still worry that they are missing out, even if they are not on social media at all.
The key is to turn off the technology and do something else like reading a book, giving a friend a makeup, baking cookies—anything that allows them to focus on something other than social media. 4.
It is also important to encourage teenagers to recognize that they cannot possibly be everywhere and do everything. So, naturally, there will be parties or events that they cannot attend. 5. Photos can be deceiving (骗人的). And even though it looks as if their friends are having a good time, this may not be the case. They should never let the fact that they couldn’t be somewhere affect their view of themselves.
A. FOMO has become an even bigger problem.
B. FOMO is especially common to people aged 18 to 33.
C. In simple terms, FOMO stands for “fear of missing out”.
D. It can be extremely helpful in changing their attitudes towards life.
E. But this does not necessarily mean they are missing out on something.
F. By doing this, teenagers are not glued to their screens and are more active.
G. But just switching the phone to “off” doesn’t erase the feelings caused by FOMO.
高三英语七选五中等难度题查看答案及解析
Humans’ invention of zero was vital for modern mathematics and science, but we’re not the only species to consider “nothing” a number. Parrots and monkeys understand the concept of zero, and now bees have joined the club, too.
Honey bees are known to have some numerical skills such as the ability to count to four, which may come in handy when keeping track of landmarks in their environment. To see whether these abilities extended to understanding zero, researchers trained 10 bees to identify the smaller of two numbers. Across a series of trials, they showed the insects two different pictures displaying a few black shapes on a white background. If the bees flew to the picture with the smaller number of shapes, they were given delicious sugar water, but if they flew toward the larger number, they were punished with bitter-tasting food.
Once the bees had learned to consistently make the correct choice, the researchers gave them a new choice: a white background containing no shapes at all. Even though the bees had never seen an empty picture before, 64% of the time they chose it rather than a picture containing two or three shapes, the authors report today in Science. This suggests that the insects understood that “zero” is less than two or three. And they weren’t just going for the empty picture because it was new and interesting. Another group of bees trained to always choose the larger number tended to pick the nonzero image in this test.
In further experiments, the researchers showed that bees’ understanding of zero was even more complex: for example, they were able to distinguish between one and zero-a challenge even for some other members of the zero club. Advanced numerical abilities like this could give animals an evolutionary advantage, helping them keep track of predators(捕食者)and food sources. And if an insect can display such a thorough grasp of the number zero, write the researchers, then this ability may be more common in the animal kingdom than we think.
1.According to the trials, the researchers have found that bees ________.
A. have the same intelligence as parrots and monkeys
B. can count many numbers after being trained
C. can identify the smaller number quickly
D. understand the concept of zero
2.The researchers trained another group of bees to ________ .
A. confirm the bees are able to identify the smaller number
B. find the big difference between the two groups of bees
C. prove the bees are interested in new things
D. show the bees can be distinguished easily
3.What do the researchers suggest in further experiments?
A. Bees should be trained more.
B. Numerical abilities could help predators find bees.
C. Insects are better at understanding zero than animals.
D. Animals may display a thorough grasp of the number zero.
4.What is the best the title for the text?
A. New Findings About Bees’ Concept of Zero
B. Experients on Bees’ Numerical Skills
C. Complex Trials About the Zero Club
D. A Science Report of the Species of Bees
高三英语阅读理解困难题查看答案及解析
That the success of humans as a species depends to a large extent on our ability to cooperate in groups is widely believed. Much more so than any other animal, people are able to coordinate and join their forces and actions to produce mutual benefits.
New research involving Dr Molleman, an expert at the University of Nottingham, suggests that successful cooperation in groups depends on how people gather information about their peers, and how they base their cooperative decisions on it.
Biologists wonder how cooperation could have developed by natural selection: it is puzzling how cooperation can be beneficial when it is possible to behave selfishly and take advantage of the cooperative efforts of your group. Psychologists and economists try hard to understand why many people are willing to sacrifice their own welfare to benefit their social environment. They asked questions like “How do people make decisions when their actions can affect the welfare of others?” “How people determine their behavior when they have to cooperate in groups?”.
Dr Pieter Van Den Berg from the University of Groningen said, “From previous research we know that some people are ‘majority-oriented (以……为中心)’ and tend to look at the behavior of the majority in their group, whereas others are ‘success-oriented’ and try to find out what kind of behavior pays off best for themselves.”
Dr Molleman, from the center of the Decision Research and Experimental Economics, said, “It turns out that behavior in groups of success-oriented people was much more selfish than it in groups of majority-oriented people. As a consequence, the people in the majority-oriented groups tended to cam more money in the experiment since they cooperated more.”
1.Compared with other animals, human beings are capable of ________.
A. communicating well with others B. working together with each other
C. surviving some natural disasters D. getting access to various information
2.What are the psychologists and economists most interested in?
A. Whether people’s personal efforts will pay off eventually.
B. How cooperation has developed over a long lime naturally.
C. Why people offer to affect those around them unselfishly.
D. What benefit that good cooperation can bring immediately.
3.We can infer that the success-oriented people________.
A. are careful to select a group to join
B. are likely to be successful in the future
C. pay more attention to the result of their effort
D. have some skills in collecting useful information
4.What is the new finding of the research?
A. Having good relationship gets us to live fullest life.
B. Focusing on individual success makes people selfish.
C. Being considerate can ensure our long-term benefit.
D. Mastering social skills help create harmonious society.
高三英语阅读理解中等难度题查看答案及解析
Researchers are now using 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation.
Dr. Bramlet, a children’s heart expert at the University of Illinois College of Medicine, says the 3-D models show information he cannot get any other way.
“And so what we’ve done with the printed models? We’ve pulled it out of the screen so that you can actually hold it in your hand and evaluate the anatomy(解剖).”
A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model to understand the anatomy.
Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster(石膏)form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail. “When we’re done with the model and made our decision, we want to be able to go back to the source image and confirm those findings, he says.
Dr. Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby’s heart. But, the 3-D printed model showed several defects or problems that the baby was born with. Dr. Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations.
Kathy Magliato is a heart surgeon at Saint John’s Health Center in Los Angeles. She welcomes the new technology. She says it could help her make better decisions before she operates on the hearts of her patients.
“I can then take this very complicated structure before the operation and I can hold it in my hand and plan an operation around what I’m seeing, touching and feeling. That to me is what can potentially change the game in an operation and save lives.
Dr Bramlet continues to research the technology. He is working with the National Institutes of Health to build a 3-D library that includes heart models and images that others can use.
1.Whats the main idea of the passage?
A. The application of 3-D printing in heart operations
B. The development of 3-D technology.
C. The difficulties of heart operations.
D. Heart operations with the help 3-D models.
2.What is the biggest advantage of 3-D models in the diagnose of heart problems?
A. Surgeons can see, touch and feel the 3-D models.
B. They can help surgeons save time.
C. They can be made exactly like the hearts.
D. They can help discover the otherwise hidden heart problems.
3.Which of the following statements is TRUE?
A. The 3-D model can be taken out of a screen.
B. CAT scan and MRI are no longer needed.
C. The 3-D model is an exact copy of the heart.
D. Digital images are not reliable in heart operations.
4.What can we infer from the passage?
A. Digital images will mislead heart surgeons.
B. More patients will benefit from the 3-D technology.
C. Heart operations will never fail with 3-D models.
D. Surgeons cannot operate on hearts without 3-D models.
高三英语阅读理解中等难度题查看答案及解析
Researchers are now using 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation.
Dr. Bramlet, a children’s heart expert at the University of Illinois College of Medicine, says the 3-D models show information he cannot get any other way.
“And so what we’ve done with the printed models? We’ve pulled it out of the screen so that you can actually hold it in your hand and evaluate the anatomy(解剖).”
A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model to understand the anatomy.
Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster(石膏)form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail. “When we’re done with the model and made our decision, we want to be able to go back to the source image and confirm those findings,” he says.
Dr. Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby’s heart. But, the 3-D printed model showed several defects or problems that the baby was born with. Dr. Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations.
Kathy Magliato is a heart surgeon at Saint John’s Health Center in Los Angeles. She welcomes the new technology. She says it could help her make better decisions before she operates on the hearts of her patients.
“I can then take this very complicated structure before the operation and I can hold it in my hand and plan an operation around what I’m seeing, touching and feeling. That to me is what can potentially change the game in an operation and save lives.”
Dr Bramlet continues to research the technology. He is working with the National Institutes of Health to build a 3-D library that includes heart models and images that others can use.
1.Whats the main idea of the passage?
A. The application of 3-D printing in heart operations
B. The development of 3-D technology.
C. The difficulties of heart operations.
D. Heart operations with the help 3-D models.
2.What is the biggest advantage of 3-D models in the diagnose of heart problems?
A. Surgeons can see, touch and feel the 3-D models.
B. They can help surgeons save time.
C. They can be made exactly like the hearts.
D. They can help discover the otherwise hidden heart problems.
3.Which of the following statements is TRUE?
A. The 3-D model can be taken out of a screen.
B. CAT scan and MRI are no longer needed.
C. The 3-D model is an exact copy of the heart.
D. Digital images are not reliable in heart operations.
4.What can we infer from the passage?
A. Digital images will mislead heart surgeons.
B. More patients will benefit from the 3-D technology.
C. Heart operations will never fail with 3-D models.
D. Surgeons cannot operate on hearts without 3-D models.
高三英语阅读理解中等难度题查看答案及解析
阅读下面短文,并根据短文后的要求回答问题(请注意问题后的字数要求)。
[l]Fear and pain are two of the most useful things that human beings and animals have, if they are properly used. If fire did not hurt when it burnt, children would play with it until their hands were burnt away. Similarly, if pain existed but fear didn’t, a child would burn himself again and again, because fear would not warn himself to keep away from the fire that had burnt himself before. A really fearless soldier is not a good soldier because he will soon be killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which human beings and animals might soon die out.
[2] In our first sentence we suggested that fear should be properly used. If, for example, you never go out of your house because of the danger of being knocked down and killed in the street by a car, you are letting fear rule you too much. Even in your house you are not absolutely safe: A plane may crash on your house, or you may get cancer!
[3] The important thing is not to let fear rule you, but to use fear as your servant and guide instead. Fear will warn you of dangers; then you have to decide what action to take.
[4] In many cases, you can take quick and successful action to avoid the danger. For example, you see a car coming straight towards you. Fear warns you, then you jump out of the way, and all is well.
[5] In some cases, however, you decide that there is nothing that you can do to ___________. For example, you can’t prevent a plane crashing onto your house. In this case, fear is no longer of any use, and you have to try to overcome it.
1.What is mainly talked about in this passage? (no more than 15 words)
_________________________________________________________________________
2.How does the author support his idea in Paragraph 2? (no more than 5 words)
_________________________________________________________________________
3.Why does the author say that a fearless soldier is not a good soldier? (no more than 15 words)
_________________________________________________________________________
4.What benefit can we get from “fear” according to the passage? (no more than 10 words)
__________________________________________________________________________
5.Fill in the blank in Paragraph 5 with proper words. (no more than 5 words)
__________________________________________________________________________
高三英语其他题中等难度题查看答案及解析
阅读下面短文,并根据短文后的要求回答问题(请注意问题后的字数要求)。
[l]Fear and pain are two of the most useful things that human beings and animals have, if they are properly used. If fire did not hurt when it burnt, children would play with it until their hands were burnt away. Similarly, if pain existed but fear didn’t, a child would burn himself again and again, because fear would not warn himself to keep away from the fire that had burnt himself before. A really fearless soldier is not a good soldier because he will soon be killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which human beings and animals might soon die out.
[2] In our first sentence we suggested that fear should be properly used. If, for example, you never go out of your house because of the danger of being knocked down and killed in the street by a car, you are letting fear rule you too much. Even in your house you are not absolutely safe: A plane may crash on your house, or you may get cancer!
[3] The important thing is not to let fear rule you, but to use fear as your servant and guide instead. Fear will warn you of dangers; then you have to decide what action to take.
[4] In many cases, you can take quick and successful action to avoid the danger. For example, you see a car coming straight towards you. Fear warns you, then you jump out of the way, and all is well.
[5] In some cases, however, you decide that there is nothing that you can do to ___________. For example, you can’t prevent a plane crashing onto your house. In this case, fear is no longer of any use, and you have to try to overcome it.
1.What is mainly talked about in this passage? (no more than 15 words)
_________________________________________________________________________
2.How does the author support his idea in Paragraph 2? (no more than 5 words)
_________________________________________________________________________
3.Why does the author say that a fearless soldier is not a good soldier? (no more than 15 words)
_________________________________________________________________________
4.What benefit can we get from “fear” according to the passage? (no more than 10 words)
__________________________________________________________________________
5.Fill in the blank in Paragraph 5 with proper words. (no more than 5 words)
__________________________________________________________________________
高三英语其他题极难题查看答案及解析
阅读下面短文,并根据短文后的要求回答问题(请注意问题后的字数要求)。
[l]Fear and pain are two of the most useful things that human beings and animals have, if they are properly used. If fire did not hurt when it burnt, children would play with it until their hands were burnt away. Similarly, if pain existed but fear didn’t, a child would burn himself again and again, because fear would not warn himself to keep away from the fire that had burnt himself before. A really fearless soldier is not a good soldier because he will soon be killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which human beings and animals might soon die out.
[2] In our first sentence we suggested that fear should be properly used. If, for example, you never go out of your house because of the danger of being knocked down and killed in the street by a car, you are letting fear rule you too much. Even in your house you are not absolutely safe: A plane may crash on your house, or you may get cancer!
[3] The important thing is not to let fear rule you, but to use fear as your servant and guide instead. Fear will warn you of dangers; then you have to decide what action to take.
[4] In many cases, you can take quick and successful action to avoid the danger. For example, you see a car coming straight towards you. Fear warns you, then you jump out of the way, and all is well.
[5] In some cases, however, you decide that there is nothing that you can do to ___________. For example, you can’t prevent a plane crashing onto your house. In this case, fear is no longer of any use, and you have to try to overcome it.
1.What is mainly talked about in this passage? (no more than 15 words)
_________________________________________________________________________
2.How does the author support his idea in Paragraph 2? (no more than 5 words)
_________________________________________________________________________
3.Why does the author say that a fearless soldier is not a good soldier? (no more than 15 words)
_________________________________________________________________________
4. What benefit can we get from “fear” according to the passage? (no more than 10 words)
__________________________________________________________________________
5.Fill in the blank in Paragraph 5 with proper words. (no more than 5 words)
__________________________________________________________________________
高三英语阅读理解中等难度题查看答案及解析
Having heard wolves howling in the forest, Lala her walk up the path to the caves fearing that there might be wild beasts lying in wait for her.
A.accumulated B.circulated C.accelerated D.calculated
高三英语单项填空中等难度题查看答案及解析