高三英语阅读理解带详解

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】高考英语阅读理解试题(有答案和解析)及解析一、高中英语阅读理解1．阅读理解Plastic sludge(污泥)and garbage is a disaster for the world's oceans. A film crew traveled the globe to document the rubbish. And Julie Andersen of the Plastic Oceans Foundation says what we see is just the ti p of the problem. “Half of the waste actually sinks to the bottom, and that remains on the surface actually breaks down. ”The filmmakers found rubbish in ocean gyres, the circulating currents that trap large concentrations of pollution in the Atlantic, Indian, and Pacifc Oceans, home of what some have plastic. What we found was a plastic smog that spread throughout all the water. And in some parts of the oceans, scientists have found more plastic than plant. ”The pieces of the plastic garbage infect the food chain, sometimes visibly, and more so at the microscopic level, where the plastic particles interact with other pollutants. “There are heavy metals, medicines, industrial waste in the sea, while it acts like magnets(磁铁). These poisonous substances absorb on the plastic, and then when seafood absorbs the plastics, those poisonous substances enter the fatty tissues. ”To be consumed by other sea life and by people at last. China, Indonesia, the Philippines, Thailand and Vietnam are the worst plastic polluters. The United States, although a leader in recycling, is one of the world's 20 since it produces and consumes so much plastic. There are efforts around the world to address the problem, including at this newly opened recycling center in Lebanon(黎巴嫩). But Andersen says there is more that people can do. “Cut back on single-use plastics, straws, plastic cups, plastic water bottles, plastic bags and find alternatives like reusable materials.” She says healthy oceans are essential to our survival.（1）What can we learn from the passage?A. There's all island full of plastic rubbish in the Pacific.B. The bad effect of plastic pollution can't be seen by eyes.C. The United States is the least plastic polluters.D. The plastic pollution to oceans is more serious than what we can see.（2）What does the underlined word “it” refer to in paragraph 3?A. Pollutants like heavy metals and medicines.B. The plastic particles.C. Seafood.D. Fatty tissues.（3）What can be inferred from the last paragraph?A. All Asian countries have the most serious problem of plastic pollution.B. The plastic problem hasn't attracted the world's attention.C. Andersen is not satisfied with what has been done to solve the plastic problem,D. People should stop using plastic products immediately.（4）Which may be the title of the passage?A. Plastic pollution in the World.B. Plastic pollution—Oceans'Disaster.C. Ways to solve the problem of plastic pollution to oceans.D. Plastic pollution and our health.【答案】（1）D（2）B（3）C（4）B【解析】【分析】这是一篇说明文。

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）高考英语阅读理解试题经典及解析一、高中英语阅读理解1．阅读理解When was the last time you used plastic plates? Next time, why not try some edible ones? You'll help the environment and your guests won't go hungry. "I used to work in school catering and saw a lot of money being thrown away. I thought that was criminal, so I decided to do something about it," said Italian school chef Tiziano Vicentini.Now, Vicentini has an amazing range of edible plates for schools. The plates are made out of bread dough, so you can eat them afterwards. "These dishes cost a few pennies each and are either eaten by the kids, or go into recycling bins for animal food," explained Vicentini, 50, of Milan. But now other companies are developing edible plates, too. The Edible-Plate Company offers edible plates, bowls, trays and cups. Their products are environmentally-friendly, 100% biodegradable and can be used for all types of catering and home use. And they're made from a natural plant. After use, they can be fed to animals or left to degrade naturally.They also have a range of cutlery（餐具） made from corn and potato starch（淀粉）. These plates will also help reduce the amount of plastic; we create. Waste from plastic causes a lot of damage to the environment, as well as costing governments millions m waste management. Plastic bags often end up in landfill sites or on the street. And the burning of plastic waste causes toxic gases that pollute the air. In response to this, governments around the world are introducing tough recycling regulations. And many shops are offering biodegradable plastic bags and eco-safe packaging on their products. To help matters, the International Organization for Standardization (the ISO) has also developed a system to evaluate the biodegradability of products, with a certification and logo scheme, Meanwhile, how about a nice plate for lunch?（1）Which of the following is not the advantage of edible plates?A. They are expensive.B. They can degrade naturally.C. They are environmentally-friendly.D. They are made from natural plant.（2）Which of the following statements is true?A. Tiziano is from Germany.B. Edible plates are only used for school catering.C. Corn and potato starch can be used to make cutlery.D. The Edible Plate Company doesn't produce edible bowls.（3）What does the underlined word "this" refer to?A. The air pollution.B. The edible cutlery.C. The toxic gases caused by the burning of plastic.D. The damage to the environment caused by plastic waste.（4）What is the main idea of this passage?A. The measures to stop the pollution.B. The ways to reduce the plastic waste.C. How to make edible plates from natural plants. .D. The plate solution to eating and environmental problem.【答案】（1）A（2）C（3）D（4）D【解析】【分析】本文是一篇说明文，介绍了饮食和环境的问题，并且提出了相应的解决方法。

高中英语阅读理解试题及答案高中英语阅读理解试题及答案（通用13篇）高考英语阅读考察的是大家对文章的理解与信息的提取能力，为了帮助大家，店铺分享了一些高中英语阅读理解试题及答案，希望能对大家有所帮助!高中英语阅读理解试题及答案篇1Artificial(假的) flowers are used for scientific as well as for decorative purposes. They are made from a variety of materials, such as wax and glass, so skillfully that they can scarcely be distinguished from natural flowers. In making such models, painstaking and artistry are called for, as well as thorough knowledge of plant structure. The collection of glass flowers in the Botanical Museum of Harvard University is the most famous in North America and is widely known throughout the scientific world. In all, there are several thousand models in colored glass, the work of two artist-naturalists, Leopold Blaschka and his son Rudolph?The intention was to have the collection represent at least one member of each flower family native to the United States. Although it was never completed. It contains more than seven hundred species representing 164 families of flowering plants, a group of fruits showing the effect of fungus diseases, and thousands of flower parts and magnified details. Every detail of these is accurately reproduced in color and structure. The models are kept in locked cases as they are too valuable and fragile for classroom use?51. Which of the following is the best title for the passage?A. An Extensive Collection of Glass Flowers ?B. The Lives of Leopold and Rudolph?C. Flowers Native to the United States?D. Material Used for Artificial Flowers?52. It can be inferred from the passage that the goal of Leopold and Rudolph was to ______________?A. create a botanical garden where only exotic flowers grew?B. do a thorough study of plant structure?C. make a copy of one member of each United States flower family?D. show that glass are more realistic than wax flowers?53.The underlined word “it” refers to ______________?A. the intentionB. the collectionC. one memberD. each flower family?54. Which of the following is NOT included in the display at the Botanical Museum of Harvard University?A. Models of 164 families of flowering plants？B. Magnified details of flower parts？C. Several species of native birds？D. A group of diseased fruits？55. Which of the following statements is true of the flowers at Harvard University?A. They form a completed collection？B. They have a marvelous fragrance？C. They are loaned to schools for classroom use？D. They use authentic representations.【答案与解析】 51—55 ACBCD51.A.细节理解题。

【英语】高三英语阅读理解真题汇编(含答案)含解析一、高中英语阅读理解1．阅读理解Notre-Dame, the cathedral (大教堂) that serves as one of Paris's most beloved monuments, is on fire. According to The New York Times, the fire began around 6: 30 p.m. local time, when tourists urgently rushed out of the building. While Andre Finot, a spokesman for the cathedral, told The Times, that the cause of the fire is still unknown and that no one has been hurt while damage to the building appears catastrophic（灾难性的）.CNN reports that over 400 firefighters have been sent to fight the fire, but that they may be unable to save the cathedral. Built in the 12th century, Notre-Dame houses several relics important to Catholics (天主教徒). NBC News reports that relics from Saint Genevieve and Saint Denis may been lost, together with a relic believed to be from Jesus Christ's crown of thorns, but it states that authorities now believe that the cathedral has been saved from “total destruction”. Notre-Dame is visited by a reported 30, 000 people a day and 13 million people per year. Its destruction represents a global cultural loss. "This is just horrible", Mohamed Megdoul, 33, a film producer and witness to the fire told The Times, speaking through tears. "A thousand years of history is being wiped away. This belonged to the whole world, and now it's disappearing."French President Emmanuel Macron expressed his sadness on Twitter. "Notre-Dame of Paris in flames," reads an English translation of his statement. "Emotion for a whole nation. Thoughts for all Catholics and for all the French. Like all our countrymen, I'm sad together to see this part of us burn." Other politicians, including Melanis Trump, London Mayor Sadiq Khan, U. K. Prime Minister Theresa May also shared their sadness on Twitter.（1）What do we know about Notre-Dame according to the passage?A.It has been completely destroyed by the fire.B.It's a huge political loss to the world.C.It's only meaningful to Catholics.D.The reason of the fire remained to be found out.（2）What does the underlined sentence in the third paragraph imply?A.The history of France is destroyed because of the fire.B.The loss the fire caused is huge.C.The damage of Notre-Dame is being wiped off.D.The cathedral has been saved from "total destruction".（3）What's the purpose of writing the passage?A.To report a disaster of Notre-Dame.B.To express people's sadness of the destruction.C.To emphasize the value of Notre-Dame.D.To show the concerns from the worldwide.【答案】（1）D（2）B（3）A【解析】【分析】本文是一篇新闻报道，报道了举世闻名的法国巴黎圣母院发生火灾的相关信息。

【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。

（英语）高考英语阅读理解题20套(带答案)含解析一、高中英语阅读理解1．阅读理解Durian(榴莲) is probably the smelliest fruit in the world, letting out an unusual unpleasant smell which would make anyone bring up. However, nobody was aware of what gave this fruit its unique smell, so a team of researchers from Singapore decided to take a look at its genome (基因组) and find out,Durian is well-known throughout Southeast Asia as the king of fruits, mostly because of its awful appearance and smell. However, the origin of this unpleasant smell was unknown, so researchers decided to map the genome of the fruit, and find the gene that controlled it. A group of genes, volatile sulfur compounds (含硫化合物), became very active in the fruit, and they were found responsible for resulting in the unpleasant smell.The fruit confuses everyone with a sulfuric smell, like rotten onions and ingredients. The smell lasts long, mostly because the fruit contains more volatile sulfur compounds. Other species usually benefit from two gene copies at most, but durian has four, leading to the striking smell.However, this smell might be an advantage for durian in the wild. Although we find it unpleasant, many animals might be attracted by it. If they eat the fruit, then they can easily spread its seeds everywhere, thus contributing to the distribution of the species.The mapping of the durian genome also showed some other information on the species. First of all, the fruit has an impressive number of genes, namely 46,000. Also, with the help of these genes, they saw how it evolved, and discovered it was related to the cacao tree. All the other discoveries have been published in the journal Nature Genetics.Despite the striking smell, many people actually enjoy eating the fruit. However, not all durian species are edible, and some of them may even cause damage to our health, Even so, the fruit is often imported, significantly contributing to the economy.（1）What give durian its unique smell?A. Onions nearby.B. Two gene copies.C. Rotten ingredients in it.D. Volatile sulfur compounds.（2）What does the underlin ed word “evolved” in Paragraph 5 probably mean?A. Developed.B. Escaped.C. Predicted.D. Tolerated.（3）What can we infer from the text?A. No birds enjoy eating durian.B. Durian can be planted all over the world.C. Some of durian species can not be eaten.D. Durian has no relationship with the cacao tree.（4）What's the best title for the text?A. What's Durian?B. The Influence of the SmellC. The Distribution of DurianD. The Mystery of the Unpleasant Smell of Durian 【答案】（1）D（2）A（3）C（4）D【解析】【分析】本文是一篇说明文，新加坡的研究者找出导致水果有难闻气味的原因就是水果中含有的挥发性硫化合物非常活跃，这种气味对于野外生存榴莲来说有利于吸引动物来吃这种水果，同时传播种子。

【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。