【英语】高三英语阅读理解专项训练及答案含解析

高三英语阅读理解题训练及答案详解第一篇：Imagine a mass of floating waste is two times the size of the state of Texas. Texas has a land area of more than 678 000 square kilometers. So it might bedifficult to imagine anything twice as big.All together, this mass of waste flowing in the North Pacific Ocean is known as the Great Pacific Ocean Garbage Patch. It weighs about 3 500 000 tons. The waste includes bags，bottles and containers—plastic products of all kinds.The eastern part of the Great Pacific Ocean Garbage Patch is about l 600 kilometers west of California. The western part is west of the Hawaiian Islands and east of Japan. The area has been described as a kind of oceanic desert，with light winds and slow moving water currents. The water moves so slow that garbage from all over the world collects there.In recent years，there have been growing concerns about the floating garbage and its effect on sea creatures and human health. Scientists say thousands of animals get trapped in the floating waste，resulting in death or injury. Even more die from a lack of food or water after swallowing pieces ofplastic. The trash can also make animals feel full，lessening their desire to eat or drink.The floating garbage also can have harmful effects on people. There is an increased threat of infection of disease from polluted waste，and from eating fish that swallowed waste. Divers can also get trapped in the plastic.Its existence first gained public attention in l997. That was when racing boat captain and oceanographer Charles Moore and his crew sailed into the garbage while returning from a racing event. Five years earlier，another oceanographer learned of the trash after a shipment of rubber duckies got lost at sea. Many of those toys are now part of the Great Pacific Ocean Garbage Patch.In August，2009，a team from the University of California，San Diego became thelatest group to travel to it. They were shocked by the amount of waste they saw. They gathered hundreds of sea creatures and water samples to measure the garbage patch’s effec t on ocean environment.51.How did the writer introduce the topic of the passage?A. By giving an example.B. By listing the facts.C. By telling a story.D. By giving a parison.52.What do we know about the Great Pacific Ocean Garbage Patch?A. It is made up of various kinds of plastic products.B. It is a solid mass of floating waste materials.C. It lies l60 000 kilometers east of California.D. It is described as a kind of oceanic desert.53.Why do people pay attention to the Great Pacific Ocean Garbage Patch?A. Because it may prevent the flow of ocean water.B. Because the polluted plastic articles will move up the food chain.C. Because it may be from an island in the pacific.D. Because ships may be trapped in the floating waste.54.Which column can you find the passage on a newspaper?A. Sports and entertainment.B. Media and culture.C. Environment and society.D. Science and technology.55.The purpose of writing this passage isto____________.A. warn people of the danger to travel in the pacificB. analyze what caused the waste patch in the pacificC. give advice on how to recycle waste in the oceanD. introduce the Great Pacific Ocean Garbage Patch第二篇：Europeans should try to stay indoors if ash from Iceland's volcano starts settling, the World Health Organization warned Friday as small amounts fell in Iceland, Scotland and Norway.WHO spokesman Daniel Epstein said the microscopic(微小的) ash is potentially dangerous for people when it starts to reach the Earth because inhaled(吸入) particles can enter the lungs and cause respiratory problems. And he also said Europeans who go outside might want to consider wearing a mask.Other experts, however, weren't convinced the volcanic ash would have a major effect on peoples' health and said WHO's warnings were "hysterical." They said volcanic ash was much less dangerous than cigarette smoke or pollution. Volcanic ash is made of fine particles of fragmented volcanic rock. It is light gray to black and can be as fine as talcum powder. During a volcanic eruption, the ash can be breathed deep into the lungs and cause irritation even in healthy people. But once it falls from a greater distance — like from the cloud currently hovering above Europe — its health effects are often minimal, experts say."Not all particles are created equal," said Ken Donaldson, a professor of respiratory toxicology at the University of Edinburgh, "In the great scheme of things, volcanic ash is not all that harmful." And he said most Europeans' exposure to volcanic ash would be negligible and that only those in the near districts of the Icelandic volcano would likely be at risk.Dr. Stephen Spiro, a professor of respiratory medicine and deputy chair of the British Lung Foundation, said the further the particles travel, the less dangerous they will be. "The cloud has already passed over northern Scotland and we haven't heard of any ill effects there," he said. Spiro said to wear masks or stay indoors to avoid volcanic ash was "over the top" and "a bit hysterical."60. The text is mainly about .A. the effect of volcanic ashB. the health risk of volcanic ashC. the disadvantages of volcanic ashD. the opinions on health risk of volcanic ash61. Which one is true according to Paragraph3?A. The volcanic ash’s effects on Europeans were little.B. The ash caused irritation even in healthy people.C. Other experts thought WTO’S warnings were useful.D. The volcanic ash was more dangerous than cigarette smoke or pollution.62. The underlined word “hysterical” in Paragraph4 most probably means .A. amazingB. practicalC. valuableD. overstated63. What can we learn from the passage?A. The volcanic ash wouldn’t be harmful to people.B. All experts thought the volcanic ash did great harm to our health.C. People close to the volcano would likely be at risk according to some experts.D. Europeans should stay indoors because Iceland's volcano starts settling.第一篇：51.D。

（英语）高三英语阅读理解专项训练100(附答案)及解析一、高中英语阅读理解1．阅读理解Since English biologist Charles Darwin published On the Origin of Species in 1859, scientists have vastly improved their knowledge of natural history. However, a lot of information is still of the speculation, and scientists can still only make educated guesses at certain things.One subject that they guess about is why some 400 million years ago, animals in the sea developed limbs (肢) that allowed them to move onto and live on land.Recently, an idea that occurred to the US paleontologist (古生物学家) Alfred Romer a century ago became a hot topic once again.Homer thought that tidal (潮汐的) pools might have led to fish gaining limbs. Sea animals would have been forced into these pools by strong tides. Then, they would have been made either to adapt to their new environment close to land or die. The fittest among them grew to accomplish the transition (过渡) from sea to land.Romer called these earliest four-footed animals “tetrapods”. Science has alwa ys thought that this was a credible theory, but only recently has there been strong enough evidence to support it.Hannah Byrne is an oceanographer (海洋学家) at Uppsala University in Sweden. She announced at the 2018 Ocean Sciences Meeting in Oregon, US, that by using computer software, her team had managed to link Homer's theory to places where fossil deposits (沉积物) of the earliest tetrapods were found.According to the magazine Science, in 2014, Steven Balbus, a scientist at the University of Oxford in the UK, calculated that 400 million years ago, when the move from land to sea was achieved, tides were stronger than they are today. This is because the planet was 10 percent closer to the moon than it is now.The creatures stranded in the pools wou ld have been under the pressure of “survival of the fittest”, explained Mattias Green, an ocean scientist at the UK's University of Bangor. As he told Science, “After a few days in these pools, you become food or you run out of food... the fish that had large limbs had an advantage because they could flip (翻转) themselves back in the water.”As is often the case, however, there are others who find the theory less convincing. Cambridge University's paleontologist Jennifer Clark, speaking to Nature magazine, seemed unconvinced. “It's only one of many ideas for the origin of land-based tetrapods, any or all of which may have been a part of the answer,” she said.（1）Who first proposed the theory that fish might have gained limbs because of tidal pools?A. Alfred Romer.B. Charles Darwin.C. Hannah Byrne.D. Steven Balbus.（2）Why were tides stronger 400 million years ago than they are today according to Steven Balbus?A. There were larger oceans.B. Earth was closer to the moon.C. The moon gave off more energy.D. Earth was under greater pressure.（3）The underlined word “stranded” in Paragraph 8 probably means “________”.A. foundB. settledC. abandonedD. trapped（4）What is the focus of the article?A. The arguments over a scientific theory.B. The proposal of a new scientific theory.C. Some new evidence to support a previous theory.D. A new discovery that questions a previous theory.【答案】（1）A（2）B（3）D（4）C【解析】【分析】本文为一篇说明文，一些新的证据验证了先前人们的猜测理论：即海洋中的动物是因为潮汐的作用导致鱼类发展出四肢，迁徙到陆地的。

高考英语阅读理解训练题及答案解析（4篇）高考英语阅读理解训练题及答案解析 1To Richard Dorsay, a 36-year-old homeless Chicagoan. it was, at last, a place to call his own But to everyone else. it was the Lake Shore Drive road bridge, so when Chicago city authorities discovered Dorsay living inside the bridge's steel s1ructurc last month. they had no choice but to drive him away.He had been living in the bridge for three years. lie also furnished it with a television, a microwave and a PlayStation, and borrowed power from the municipal(市政的)electricity supply. But that wasn't the most extraordinary thing. The most extraordinary thing was that the Lake Shore Drive Bridge is a drawbridge.“The first time, it was scary," Dorsay told a reporter from the Chicago Sun-Times, recalling how a bell would ring and his home would tip into the air, allowing ships to pass along the Chicago River below. "After that, it was almost like riding a ferry's wheel." Brian Steele, a spokesman for the Chicago Department of Transportation, puts it more straightforwardly. "Essentially," he says, "it changed his living space from horizontal(水平的) to vertical. "Dorsay had a history of homelessness and emotional problem. but inthe bridge. he thought, he had finally found a kind of stability. "You've got to be kind of agile(敏捷的)," he admitted. "But it doesn't take genius to figure out what to do. " Dorsay is now without a home, though he is currently staying with his parents. Gary, his father, said,"I've always hoped that he would find a place and he would seek employment. He is strong enough and bright enough to do something."(B) 24. According to Richard Dorsay, why did he like living in the bridge?A. It was free.B. He felt more secure there.C. It was an extraordinary thing.D. He liked scary things.推理题。

（英语）高考英语阅读理解专项训练及答案及解析一、高中英语阅读理解1．阅读下列短文，从短文后每题所给的A、B、C和D四个选项中，选出最佳选项。

A new technology is going to ripe, one that could transform our daily lives, help to form new industries, even remove world economic powers from their present positions. Unlike the wave of industrialization that began in the West and spread later to the rest of the world, the new developments are taking place in research labs all over the globe—and Asians are in the forefront. Physicists are creating a new class of materials that display an amazing property unforeseen even two years ago—superconductivity (超导体技术).Used today only in specialized equipment, super conductors have the potential to radically change most of the electrical and electronic appliances found in the home, making them smaller, more powerful and efficient. They could free our cities of pollution by replacing petrol and diesel (柴油) vehicles with electric cars, and cut the cost of electricity. The new materials do something that even the best of conductors such as copper and silver cannot—they do away with all electrical resistance. The significances for energy storage are great.The technology is in its early stage, still accessible to countries that decide to invest brains and money. For 75 years it had remained little more than a scientific curiosity with limited practical use because the phenomenon occurred only at extremely low temperatures. It was first observed in 1911 by a Dutch scientist named Heike Kamerlingh Onnes, who cooled mercury (水银) to temperatures below -269℃ with liquid helium (氦). Then in January last year, two IBM scientists, K. Alex Muller and J. George Bednorz, found a metal oxide ceramic (氧化陶瓷) that superconducted at -243℃. Their report went largely unnoticed until last December, when it was confirmed at a scientific meeting in Boston. Today Japan, India, China and other Asian countries all have their share of experts who spend their days and nights in labs, acting as midwives (助产士) to a new technology.（1）As is indicated in the passage, the technology of superconductivity ____________. A. has already been developed B. is still under developmentC. will be used only in specialized equipmentD. will be used in daily lives in a few years（2）The new technology differs from the others in that ____________.A. it began in the East and spread later to the rest of the worldB. it began in the West and spread later to the rest of the worldC. it is being cultivated in research labs around the worldD. it is accessible to physicists who are intelligent and rich（3）From the passage, we may conclude that ____________.A. Asian scientists gain the lead in the growth of the new technologyB. Dutch scientists kept reporting new findings for the last 75 yearsC. IBM scientists' report receive immediate attention all over the worldD. the West was astonished at the new technology developed by the Asians（4）Which of the following would be the best title for the passage?A. The Prospect of a New TechnologyB. Superconductivity: A New TechnologyC. A New Technology: The Key to Change the Way of Our LivesD. A New Technology: A Joint Effort of Many Countries【答案】（1）B（2）C（3）A（4）B【解析】【分析】本文是一篇说明文，介绍了超导体技术的发展潜能和发展状况。

高三英语阅读理解专项训练100(附答案)含解析一、高中英语阅读理解1．阅读理解When you go to the doctor, you like to come away with a prescription．It makes you feel better to know you will get some medicine. But the doctor knows that medicine is not always needed. Sometimes all a sick person needs is some reassurance that all will be well. In such cases the doctor may prescribe a placebo.A placebo is a sugar pill, a harmless shot, or ail empty capsule. Even though they have no medicine in them, these things seem to make people well. The patient thinks it is medicine and begins to get better. How does this happen?The study of the placebo opens up new knowledge about the way the human body can heal itself. It is as if there was a doctor in each of us. The doctor will heal the body for us if we let it. But it is not yet known just how the placebo works to heal the body. Some people say it works because the human mind fools itself. These people say that if the mind is fooled into thinking it got medicine, then it will act as if it did, and the body will feel better.Placebos do not always work. The success of this treatment seems to rest a lot with the relationship between the patient and the doctor. If the patient has a lot of trust in the doctor and if the doctor really wants to help the patient, then the placebo is more likely to work. So in a way, the doctor is the most powerful placebo of all.A placebo can also have bad effects. If patients expect a bad reaction to medicine, then they will also show a bad reaction to the placebo. This would seem to show that a lot of how you react to medicine is in your mind rather than in your body. Some doctors still think that if the placebo can have bad effects it should never be used. They think there is still not enough known about it. The strange power of the placebo does seem to suggest that the human mind is stronger than we think it is. There are people who say you can heal your body by using your mind. And the interesting thing is that even people who swear this is not possible have been healed by a placebo．（1）What do we know about placebo according to the passage?A. It contains some sort of medicine.B. It won't function if you are negative about medicine.C. People who don't believe placebo can't be healed by it.D. Patients and doctors know clearly how it helps to heal the body.（2）Why is the doctor sometimes the most powerful placebo?A. The patient needs help badly．B. The patient believes in the doctor．C. The doctor knows better about your body．D. The doctor has carefully studied medicine．（3）What does the underlined word “it” in Paragraph 5 refer to?A. The placebo.B. The bad effect.C. The body.D. The medicine.（4）What is the passage mainly about?A. Placebo：Work on Your MindB. Placebo：The Most Powerful MedicineC. Placebo：The Best DoctorD. Placebo：Heal Your Body【答案】（1）A（2）B（3）B（4）A【解析】【分析】本文是一篇说明文，有时候病人的病并不是需要真正的药物来医治，而是需要医生开一些安慰的药剂，安慰病人的心理使病人的情绪得到舒缓，从而有利于病情的痊愈。

【英语】高三英语阅读理解题20套(带答案)及解析一、高中英语阅读理解1．阅读理解Many scientists today are convinced that life exists elsewhere in the universe---life probably much like that on our own planet. They reason in the following way.As far as astronomers can determine, the entire universe is built of the same matter. They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore, it is reasonable to guess that other stars, with their own planets, were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist.Life requires the right amount and kind of atmosphere. This eliminates(除去) all those planets in the universe that are not about the same size and weight as the earth. A smaller planet would lose its atmosphere; a larger one would hold too much of it.Life also requires a steady supply of heat and light. This eliminates double stars, or stars that flare up suddenly. Only single stars that are steady sources of heat and light like our sun would qualify.Finally, life could evolve(进化) only if the planet is just the right distance from its sun. With a weaker sun than our own, the planet would have to be closer to it. With a stronger sun, it would have to be farther away.If we suppose that every star in the universe has a family of planets, then how many planets might support life? First, eliminate those stars that are not like our sun. Next eliminate most of their planets; they are either too far from or too close to their suns. Then eliminate all those planets which are not the same size and weight as the earth. Finally, remember that the proper conditions do not necessarily mean that life actually does exist on a planet. It may not have begun yet, or it may have already died out.This process of elimination seems to leave very few planets on which earthlike life might be found. However, even if life could exist on only one planet in a million, there are so many billions of planets that this would still leave a vast number on which life could exist.（1）The existence of life depends on all of the following factors EXCEPT .A.the right amount of atmosphereB.our own solar systemC.steady heat and lightD.the right distance from the sun（2）Which of the following statements is INCORRECT?A.The planet must be as big and heavy as the earth.B.Proper conditions are essential to the existence of life.C.Double stars can provide steady light and heat.D.The distance between a planet and its sun should be right.（3）What kind of planet might NOT support life?A.Most of the planets of the stars.B.Stars similar to our sun.C.Planets similar to the earth.D.Planets with proper conditions.（4）At the end of the passage the author suggests that .A.it is impossible for life to exist on planetsB.earthlike life could only exist on a few planetsC.life could exist on only one planet in a millionD.life could exist on a great number of planets【答案】（1）B（2）C（3）A（4）D【解析】【分析】本文是一篇说明文，整个宇宙都是由同一种物质构成的，物质在宇宙的每一部分都遵循同样的规律。

（英语）高考英语阅读理解题20套（带答案）及解析（英语）高考英语阅读理解题20套(带答案)及解析一、高中英语阅读理解1．阅读理解One of the biggest problems when we are talking is the awkward silence. Encountering this situation is so uncomfortable that you would avoid meeting new people in the first place. In the past, I struggled wit h this and I even thought it had to do with my DNA or something… But later I learned that once you know how to keep those words flowing, you can meet and talk to anyone you like, which helps create great possibilities for friendship, fun and shared activities that you would otherwise have missed out on.After studying this in depth, I had different opinions and found that one of these common behaviors is the habit of filtering (过滤)--holding back from saying something until you've "checked" to make sure that what you're about to say is cool, impressive and interesting. Another problem is not learning to get in the mood for conversation. If you don't know how to change from subjects, then it can take a lot of time to warm up.It is the reflex (习惯性思维) that allows you to say whatever goes on in your mind. It's fun to realize that you're allowed to say whatever is on your mind. As long as you don't say anything that could land you in jail (监狱).All of the "Oh! That's interesting…" "Hmm, I've never heard of that" "Hmm, cool!" expressions are reactionary (保守的) bits of conversation that prove to the other person that you're really listening. This works 99% of the time. So, if you show some interest, they'll hang around and want to talk to you even more.Everyone knows that stories juice-up conversations, but most people only talk about stories of their own lives. When someone mentions something related to any of them, just tell the story, even if it's not from your life. The more interesting, stranger or more frightening they are, the harder they are to forget.（1）If people can deal with the awkward silence, they can .A. train their working skillB. improve their life qualityC. enrich their social lifeD. establish their working relationship（2）When talking with others, we should .A. feel nervousB. think twiceC. be free to expressD. avoid breaking in （3）According to the passage, what do the speakers care much about?A. The attractive topics of conversation.B. The atmosphere of the conversation.C. The listener's experiences and tastes.D. The listener's curiosity and concern.（4）What does the underlined part "juice-up conversations" mean?A. making conversations more boringB. making conversations livelierC. making conversations smootherD. making conversations more relaxing【答案】（1）C（2）C（3）D（4）B【解析】【分析】本文本文是一篇议论文，我们谈话时最大的问题之一是尴尬的沉默。

高考英语阅读专项练习题语言知识运用（共25小题；每小题1分，满分25分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。

AMemory is an incredibly important part of our lives, allowing us to store and retrieve information about the world around us. Unfortunately, many of us experience memory difficulties in our daily lives. Luckily, there are several techniques that can help improve memory. Here are a few:- Use Mnemonic Devices: Mnemonic devices are memory tools that help us remember certain pieces of information. For example, you might use the acronym HOMES to remember the names of the Great Lakes (Huron, Ontario, Michigan, Erie, Superior). Another example is the phrase “My very eager mother just served us nine pizzas” to remember the order of the planets in our solar system (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto).-Repetition: Repetition is the act of repeating a piece of information. This technique is particularly useful for remembering short-term information. If you need to remember a phone number or a name, repeating it several times to yourself can help you commit it to memory. - Visualization: Visualization is the process of creating mental images to assist with memory. For example, if you need to remember a grocery list, you might create mental images of the items on the list. You could picture an apple in your mind, then a carton of eggs, then a loaf of bread, and so on.-Organization: Organizing information can also help improve memory.This might mean grouping similar items together, as in creating categories for different types of information. For example, if you are trying to remember a list of vocabulary words, you might group them together by similar meanings.- Sleep: Getting enough sleep is important for memory consolidation, the process of transferring short-term memories to long-term storage. Without sufficient consolidation, memories may be lost over time.-Exercise: Exercise has been shown to improve memory and cognitive function. A study conducted by the University of British Columbia found that regular aerobic exercise increases the size of the hippocampus, a brain region associated with memory.By using these techniques, you can improve your memory and ensure that important information is not forgotten.1. What is the main topic of the passage?A. The importance of sleepB. The benefits of exerciseC. Strategies to improve memoryD. The functions of the hippocampus2. What are Mnemonic Devices?A. Tools used to improve memoryB. Acronyms used to remember people's namesC. Devices used to measure memory retentionD. A type of visual aid3. What is the purpose of repetition?A. To improve cognitive functionB. To commit information to short-term memoryC. To create mental imagesD. To group similar pieces of information together4. Which of the following is an example of visualization?A. Repetitively practicing a piece of informationB. Creating mental images to assist with memoryC. Grouping similar items togetherD. Using acronyms to remember a list of items5. How can organization help improve memory?A. Grouping similar items togetherB. Using acronyms to remember a list of itemsC. Creating mental images to assist with memoryD. Repetitively practicing a piece of information答案及解析：1、答案：C，解析：本文主要介绍了几种提高记忆力的技巧，所以选C。

高三英语阅读理解专项训练及答案含解析一、高中英语阅读理解1．阅读理解Average humans can consume 15 or more drinks in plastic bottles a month. If you were born after 1978, and live until 80 years old, you will leave behind a minimum of 14,400 plastic bottles on this planet. These bottles take hundreds of years to break down into tiny pieces of plastic, never to completely disappear. Most of the waste is consumed by fish and birds, which has shortened their lifetime greatly.The Plastic Bottle Village is just a great idea that might finally save us from being buried in plastic. It's a community in Panama that is going to be made of used bottles. The design process begins with building steel frames, which are then filled with these bottles. Once this step is complete, and electrical and plumbing (管道装置) lines are put inside, the plastic walls are covered by concrete—both inside and outside. So no one will actually be able to tell that the walls are made of plastic. Besides, the material will keep the house 17°C cooler than the outside, which is the biggest benefit to people living inside.The village is the brainchild (主意) of Robert Bezeau with the intention of setting up several environmental projects. Having started a recycling program four years ago, during which a number of plastic bottles were collected, he started to think of how they could be put to use. Soon enough, he decided to use them to build houses, and came up with a basic idea for the construction process.The project hopes to make people conscious of the waste that these bottles create so that they can do more to protect the environment. The village will also create an education center that will teach individuals from the world how to reuse plastic bottles as construction materials for shelter. Recycled bottles could neutralize the negative effect of your passage on this planet, and move closer to leaving only your “footprints”.（1）What does Paragraph 1 intend to tell us?A. The reason for buying fewer drinks.B. The difficult situation of wildlife.C. The amount of plastic waste.D. The seriousness of plastic pollution.（2）What is the biggest benefit to people living in the Plastic Bottle Village?A. The house will be much cooler than normal ones.B. The material of construction will be reduced a lot.C. The newly-made house can save a lot of electricity.D. The waste of the house can be consumed by fish and birds.（3）Which of the following words can best describe Robert?A. Creative.B. Courageous.C. Enthusiastic.D. Sensitive.（4）The main purpose of Robert's projects is toA. provide shelter for localsB. reuse all deserted plastic bottlesC. popularize the use of plastic bottlesD. raise people's environmental awareness【答案】（1）D（2）A（3）A（4）D【解析】【分析】考查环保类文章。

【英语】高考英语阅读理解题20套(带答案)及解析一、高中英语阅读理解1．阅读理解Experts note that an unhealthy lifestyle can put you at great risk of heart disease and stroke. So doctors urge us to eat healthy foods, get exercise, stop smoking and limit our alcohol intake. But there is something else you can do. And it is free and easy. Smile!Dr. Chockalingam, a heart disease specialist in Columbia, advises his patients to smile. He says a smile may be one way to help your heart. "When we smile, the brain wiring changes. The chemicals that are released are more positive." He says smiling is the first step in fighting physical and emotional stress and its sometimes harmful effects on human health. This is not just New Age advice. Several studies support his opinion.When you feel stressed or under pressure, your body releases many natural hormones (荷尔蒙) including adrenaline and cortisol. Adrenaline increases your heart rate and blood pressure. Cortisol is the body's main stress hormone. It increases sugar in the bloodstream. If you are truly in danger, these hormones can help you. They are part of what we call our fight-or-flight response. However, when we are stressed for a long period, these stress hormones are ever-present in our bodies. And that, medical researchers warn, may lead to health problems.Researchers say the connection between stress and heart disease is still unclear. However, they claim that when people are stressed for long periods of time, they may have an unhealthy lifestyle, which can lead to health problems.Dr. Chockalingam says a smile may be one way to help. He tells his patients to smile 20 times an hour. To some, that might seem like a lot of smiling. Or some might even feel foolish ... smiling for seemingly no reason. But a smile does not involve drugs. It is not invasive like a surgical operation. It is free and it has no bad side effects."Once people smile, they are relaxing. This relaxation directly lowers blood pressure, improves sugar levels in the blood. If we are smiling, we are breaking that link between stress and health." And it just may provide a little extra protection to everyone's heart health.（1）Which of the following agrees with Dr. Chockalingam's opinion?A.Smile has the same effects as laughter.B.Smile can be used to take the place of medicine.C.Smile is better than any healthy lifestyle to health.D.Smile can make our body produce beneficial chemicals.（2）What can we know about the mentioned stress hormones?A.They can lower our blood pressure.B.They will surely lead to heart diseases.C.They can benefit us when we are in danger.D.They will make us live an unhealthy lifestyle.（3）Why does Dr. Chockalingam think smiling is helpful to our health?A.It can make us relax.B.It increases sugar levels.C.It has little bad side effects.D.It can happen for no reason.（4）What can be the best title for the text?A.A Thorough Analysis of the Causes of Heart DiseasesB.One Thing You Can Do Right Now to Help Your HeartC.One Thing That Is Closely Connected with Stress HormonesD.The Clear Connection Between Unhealthy Lifestyles and Heart Diseases【答案】（1）D（2）C（3）A（4）B【解析】【分析】本文是一篇说明文，哥伦比亚的心脏病专家Chockalingam博士建议多保持微笑，他认为微笑可能是帮助心脏的一种方式。