2021高考英语大一轮复习考点规范练37Unit2Cloning新人教版选修8

2021年高考英语一轮巩固达标练题Unit2Cloning含解析新人教版选修820211017416李仕才***阅读明白得。

After a long winter，spring is the ideal time for sightseeing and exploring London’s green spaces.1．Explore London’s parks and gardensSpringtime is the perfect time to explore London’s parks and gardens，when the city’s Royal Parks will be blooming with flowers.Go and admire the rainbow of azaleas(杜鹃花) at Richmond Park or hire a deckchair in St.James’s Park with a view of Buckingham Palace.2．Enjoy the entertainment at spring festivalsThere are a good many festivals and events held in London throughout spring.Make the most of the cultural exhibitions at the British Library Spring Festival，the Sundance Film Festival or the London Literature Festival；head to Shakespeare’s Globe，which hosts open­air Shakespeare performances from late April until early October.3．Get activeWarmer weather means there’s no excuse for staying indoors，so go for a walking or cycling tour of London.Alternatively，walk the Thames Walkway，which follows the river all the way from central London into the countryside；make the most of London’s “Boris Bikes”，which are available for hire all around the city and are free of charge for the first half hour.If you’re really looking for a challenge，sign up for the famous London Marathon，held annually in April.4．Take to the watersWhether cruising(航行) along the Thames River，hiring a rowing boat in Hyde Park or riding a canal boat around Little Venice，there are lots of fun ways to get on the water in London.Held every year since 1829，the Oxford and Cambridge Boat Race allows teams from England’s most famous universities to compete against each other，and draws huge crowds of watching people.【解题导语】作者介绍了四种在伦敦享受春光的方式。

2021版高考英语一轮复习Unit2Cloning达标巩固练含解析新人教版选修8202109184139李仕才***阅读明白得。

The Internet plays a big part in human life. We use it for work and entertainment. We can find new recipes on the Internet or advice on staying healthy. We can even use it to learn a new language. We use the Internet to connect with family and friends and stay in touch with issues we care about.The list goes on and on.As far as the Internet being a part of our lives—well, that train has left the station. That expression means there is no going back. If you prefer boating, you can say that ship has sailed.So, there may be no going back to an Internet-free life. But can using the Internet too much be bad for our health?It might be, say researchers.Study results show that teens who spend at least 14 hours a week online were more likely to have high blood pressure.High blood pressure makes your heart and blood vessels work too hard. Over time, this extra strain increases your risk of a heart attack or stroke.High blood pressure can also cause heart and kidney disease. It is also closely linked to some forms of dementia, a brain disease. Dementia is marked by memory disorders, personality changes, and a reduced ability to reason.Let’s introduce something about the study of it.The Henry Ford Hospital in Detroit, Michigan did the study. It involved 335 young people, from 14 to 17 years old. One hundred thirty-four of the teens were described as “heavy Internet users”. Researchers found that out of these 134 teens, 26 had high blood pressure.The researchers say the study is the first to connect heavy web use and high blood pressure. Other research has connected that heavy Internet use with health problems including anxiety, depression and obesity.The lead researcher of the study is Andrea Cassidy-Bushrow. In a statement she said, “Using the Internet is part of our daily life but it shouldn’t consume us. ”For the purpose of the study, she explains, teens considered heavy Internet users were online on “average 25 hours a week. ”Ms Cassidy-Bushrow adds that it is important for teens to take “regular breaks from their computers or smartphones” and to do some “kind of physical activity. ”She also suggests that parents limit their children’s use of the Internet to two hours a day, five days a week.【文章大意】互联网如此有用同时融入我们的生活, 但过度使用它, 会导致多种健康问题。

2021届高考英语大一轮复习Unit2Cloning课时规范训练新人教版选修8Ⅰ.阅读明白得A(2021·高考全国乙卷)I am Peter Hodes，a volunteer stem cell March 2020，I've done 89 trips—of those,51 have been have 42 hours to carry stem cells (干细胞) in my little box because I've got two ice packs and that's how long they all，from the time the stem cells are harvested from a donor (捐献者) to the time they can be implanted in the patient，we've got 72 hours at I am always conscious of time.I had one trip last year where I was caught by a hurricane in picked up the stem cells in Providence，Rhode Island，and was meant to fly to Washington then back to when I arrived at the check­in desk at Providence，the lady on the desk said：“Well，I'm really sorry，I've got some bad news for you—there are no flights from Washingto n.” So I took my box and put it on the desk and I said：“In this box are some stem cells that are urgently needed for a patient—please，please，you've got to get me back to the United Kingdom.”She just dropped arranged for a flight on a small plane to be held for me，re­routed(改道) me through Newark and got me back to the UK even earlier than originally scheduled.For this courier job，you're consciously aware that in that box you've got something that is potentially going to save somebody's life.【语篇导读】本文是一篇记叙文。

2021版高考英语一轮复习第一部分教材复习题组提分练37Unit2Cloning新人教版选修8限时30分钟语法填空(2020·德州质检)Blessed by the pleasant weather, the island province of Hainan is fast becoming known as “China's Florida”， 1.____________ (draw) masses of retirees escaping the biting cold of their hometowns.“At home in Harbin, it can be -30℃， it is unbearable! But here the climate is 2.______ (suit)，” said a 71­year­old woman from the 3.______ (extreme) cold province of Heilongjiang. She 4.____________ (move) each winter to Sanya over the past eight years.(现在完成时的时刻标志词：so far、up to now、until now、recently、since (自从)、ever since、in/over/during the past/last＋时刻段)“Here the 5.____________ (warm) is better for our health. We find so many people from our province 6.____________ we are sure we will not get bored.” said Qi Ningxia, 7.____________ 60­year­old man from Heilongjiang.About 700,000 elderly people come to Sanya every winter, almost doubling8.____________ (it) population. Nearly half of these “migratory birds”，9.____________ they are called, come from the northern provinces in China.The trend began in 2000 as people began buying Sanya apartments, opening business and persuading friends and family 10.____________ (join) them, creating a snowball effect.答案与解析【语篇解读】海南岛因其温顺的气候和新奇的空气已成为许多老人退休过冬的最佳地点。

2021年高三英语一轮复习题组层级快练37Unit2Cloning新人教版选修Ⅰ. 阅读理解Most home fires occur in the kitchen while cooking and are the leading cause of injuries from fire. mon causes of fires at night can be particularly dangerous because they may burn slowly for a long period before being discovered.Home fires are preventable! The following are simple steps that each of us can take to prevent a tragedy.CookingStay in the kitchen when you are cooking especially frying. If you leave the kitchen for even a short period of time, turn off the stove.Do not cook if you are sleepy, or have been drinking alcohol.Keep children away from cooking areas.SmokingIf you smoke, smoke outside. Most home fires caused by smoking materials start inside the home. Put your cigarettes out in a can filled with sand.Make sure cigarettes and ashes are out. The cigarette really needs to be pletely put out in an ashtray or in water before your throwing them away.Check for cigarette butts. Don't put ashtrays on chairs and sofas because they catch fire fast. Never smoke in a home where oxygen is used, even if it is turned off.ChildrenTake the mystery out of fire play by teaching children that fire is a tool, not a toy.Store matches and lighters out of children's reach and sight, preferably in a locked box.Teach children not to pick up matches or lighters they may find. Instead, they should tell an adult immediately.Electrical Equipment, Fireplaces and WoodstovesReplace all worn, old or damaged wires immediately and do not run wires under rugs or furniture.Examine and clean woodstove pipes and chimneys yearly and check monthly for damage.Never burn trash, paper, or green wood.Make sure the fire is pletely out before leaving the house or going to bed.1. The purpose of this article is to tell everyone ________．A. how to give up smokingB. how to cook at homeC. how to look after children while cookingD. how to prevent home fires2. When you are frying eggs, the telephone in your bedroom is ringing, you had better ________．A. go and answer the phone immediatelyB. ring him or her back laterC. ask your child to help cookD. ask your tired husband to help cook3. According to the passage, which is right about smoking?A. Throw away the cigarette ends just when you finish smoking.B. The leading cause of injuries from home fire is smoking.C. Put the ashtrays on chairs instead of sofas when smoking.D. You mustn't smoke in a home where there is an oxygen tank.4. As a parent, you should teach your children (or child) ________．A. how to use matches properlyB. how to keep away from matchesC. how to hide matches from othersD. how to play with matches答案与解析【文章大意】大多数家庭火灾发生在厨房做饭时，并且家庭火灾是火灾受伤的主要原因。

Unit 2 Cloning李仕才一、阅读理解。

If you're making determination for a healthier new year, consider a gut makeover(肠道清理)．Changing your microbe community(微生物群)，however, may not be easy，and nobody knows how long it might take.That's because the ecosystem already established in your gut determines how it absorbs and processes nutrients.So if the microbe community in your gut has been shaped by a daily diet of hamburgers and pizza，for example，it won't respond as quickly to a healthy diet as a gut shaped by vegetables and fruits that has a more varied microbe community.“The nutritional value of food is influenced in part by the microbe community that encounters that food，” said Dr Jeffrey Gordon，the senior author of the new paper and director of the Center for Genome Science and Systems Biology at the Washington University School of Medicine in St.Louis.“Nutritional components of a healthy diet have to be viewed from the inside out，” he said，“not just the outside in.”One of the questions the study set out to answer was how individuals with different diets respond when they try to improve their eating habits.The scientists harvested gut bacteria from humans，transplanted them into mice bred under germ­free conditions，and then fed the mice either American­style or plant­based diets.The scientists then analyzed changes in the mice's microbe communities.Of interest，the scientists harvested the gut bacteria from people who followed sharply different diets.One group ate a fairly typical American diet，consuming about 3 000 calories a day，high in animal proteins with few fruits and vegetables.Some of their favorite foods were processed cheese and lunch meat.Theother group consisted of people who were calorie­restricted.They ate less than 1 800 calories a day and had carefully tracked what they ate for at least two years，sticking to a mostly plant­based diet and consuming far less animal protein than the other group，a third fewer carbohydrates(碳水化合物)and only half the fat.This calorie­restricted group，the researchers found，had a far richer and more diverse microbe community in the gut than those eating a typical American diet.They also carried several kinds of“good” bacteria，known to promote health，that are unique to their plant­based diet.“Perhaps the best way to shape a healthi er microbe community is to eat more fiber by consuming more fruit，vegetables，whole grains，and nuts or seeds，” said Meghan Jardine，a dietitian who was not involved in the current study but has published articles on promoting healthy microbe communities.She urges people to aim for 40 to 50 grams of fiber daily，well above levels recommended by most dietary guidelines.1．What can we know from the first two paragraphs?A．Changing microbiome is fairly easy.B．Ecosystem in gut is shaped by carbohydrates.C．Nutritional components are determined by food intake.D．As to healthy diets，microbe community shaped by vegetables and fruit respond more quickly than that shaped by junk food.2．What can we learn about Meghan Jardine?A．She suggests eating as little as possible.B．She attaches great importance to fiber.C．She is one of the researchers of the current study.D．She advocates consuming more meat in daily life.3．What's the author's attitude toward gut makeover?A．Concerned. B．Opposed.C．Indifferent. D．Nervous.4．Which is the best title for the text?A．Microbe community in our gutB．A gut makeover for the new yearC．Dietary guidelines for daily dietsD．The best way towards a healthier microbe community【解题导语】本文是一篇说明文。

2021版高考英语一轮复习第一部分教材重点全程攻略Unit2Cloning限时规范特训新人教版选修820210513142Ⅰ.完形填空Miss the Wild GeeseOne morning in early fall, I spotted a pair of wild geese on our pond. The beautiful sight caught me by __1__， because we'd never seen geese there before. I wondered where they came from and why they'd__2__ our pond.As the days passed, I couldn't__3__getting a closer look and started talking to the geese. They craned their necks and raised their heads __4__but seemed to realize I was a __5__and not an enemy. I felt __6__we were bonding.One day as they were __7__ in the grass near the driveway, Idiscovered the reason for their __8__—the male had a broken left wing.He was __9__ to fly, and his lifelong mate would not leave him__10__. I marveled (赞颂) at the __11__between them.I asked a wildlife biologist friend what I should__12__. He explained that sometimes a broken wing will heal by itself and suggested letting __13__ take its course.On the first day of November, I was __14__ in the vicinity(在……邻近) of the geese with my tractor. I caught some __15_from the corner of my eye.Both geese were running toward the pond, wings beating __16__. The geese gained enough altitude to clear a neighbor's house, then __17__back toward me, flying no more than 50 feet over my head as if to say goodbye. Then they were out of__18__.I grew __19__them during their stay at our pond, and I miss them. I'll never forget their __20__ to each other. We could all learn a lesson or two from this pair.篇章导读：本文是一篇记叙文。

Unit 2 Cloning阅读理解·组块专练——练速度(限时：35分钟)Ⅰ.阅读理解AHave you seen Jurassic Park?In this film, scientists use DNA kept for tens of millions of years to clone dinosaurs. They find trouble, however, when they realize that the cloned creatures are smarter and more dangerous than expected. That's nothing more than a fiction.But could we really clone endangered animals?To date, the most successful attempt to do so was the cloning of a gaur, a rare ox­like animal from southeast Asia. Scientists used a cow to bring the cloned baby gaur, named Noah. Two days after birth, however, Noah died from a common bacterial infection. Other endangered species that may be cloned include the African bongo antelope (羚羊), the Sumatran tiger, the cheetah (猎豹), and the giant panda.Next, could we really clone extinct animals?In theory? Yes. To do this, you need a well­kept source of DNA from the extinct animals such as wool mammoth (毛象), Tasmanian tiger, or even dinosaur, and a closely related species, still living, which could serve as a_surrogate_mother.In reality? Probably not. On the one hand, it's not likely that extinct animals' DNA could survive undamaged for such a long time. Cloning such extinct animals as wool mammoth, Tasmanian tiger, or dinosaur is much more difficult due to the lack of properly well­preserved DNA. On the other hand, for example, a gaur can have a cow as a surrogate mother, definitely not a monkey. But what about an extinct animal as unique as the panda? What species could possibly serve as a surrogate mother?Cloning presents many exciting possibilities. However, even if extinct animals were brought back, they could not survive in today's world. Not only do most extinct animals have no habitat to live in, but the other plants and animals they depended on for food may also be gone as well.语篇解读：本文说明了在克隆灭绝动物的过程中遇到的重重困难与障碍。

2021版高考英语一轮复习Unit2Cloning夯基提能作业新人教版选修820210628135Ⅰ.阅读明白得AThere are many ways in which human cloning is expected to benefit mankind.Below is a list that is far from completion.Dr.Richard Seed,one of the leading proponents (支持者) of human cloningtechnology,suggests that it may someday be possible to reverse the aging process because of what we learn from cloning.Scientists believe that they may be able to treat heart attack victims by cloning their healthy heart cells and injecting them into the areas of the heart that have been damaged.Heart disease is the number one killer in the United States and several other industrialized countries.There has been a breakthrough in the research on human stem cells.Embryonic (胚胎的) stem cells can be grown to produce organs to repair or replace damaged ones.Skin for burned victims,brain cells for the brain damaged,hearts,lungs,livers,and kidneys could be produced.By combining this technology with human cloning technology it may be possible to produce needed organs for suffering people that will be free of rejection by their immune systems.Conditions such as Alzheimer’s disease,Parkinson’s disease,diabetes,heart failure,and other problems may be made curable if human cloning and its technology are not banned.Despite getting a fair amount of publicity in the news, current treatments for infertility (不生育),in terms of percentages,are not very successful.One estimate is that current infertility treatments are less than 10 percent successful.Couples go through physically and emotionally painful procedures for a small chance of having children.Many couples run out of time and money without successfully having children.Human cloning could make it possible for more infertile couples to have children than ever before.1.The passage mainly deals with .A.the problems with human cloningB.the disadvantages of human cloningC.the advantages of human cloningD.the different ways human cloning is done2.According to Dr.Richard Seed we can use cloning technology .A.to make people look youngerB.to make people live longerC.to cure people of many diseasesD.to produce more animals3.From the passage we can infer that .A.cloning has already been used to treat heart diseasesB.we can treat a man’s heart disease by cloning others’ heartsC.most people in industrialized countries suffer from heart diseasesD.more people die of heart diseases than of other diseases in America4.What would be the best headline for the last paragraph?A.With Cloning,Infertile Couples Could Have ChildrenB.Treatment of Infertility Is Not SuccessfulC.Physically and Emotionally Pain of Infertile CouplesD.The News Is Not Telling the Truth5.With an organ cloned from his own stem cells, .A.the patient is more likely to develop other diseasesB.the pati ent’s immune systems don’t reject the new organC.the patient will be free of rejection by his immune systemsD.the patient will suffer from Alzheimer’s diseaseB(2020山东寿光现代中学高三开学考试,B)Seven years ago, back in 2010,some reports covered a story that the wo rld’s longest railway tunnel was under construction in Switzerland. At that point it had already been under construction for over a decade. It had been voted to be built nearly a quarter of a century ago! The idea to build it could date back to nearly 70 years ago—about as old as some of your grandparents!Yesterday, it was finally ready!It’s 35 miles long and runs 7,500 feet beneath the Swiss Alps, a famous mountain range in Switzerland. It even runs under an old tunnel that was there before. It took a total of 17 years to build at a cost of $12 billion.128 million tons of rock were dug. Two million truckloads of earth were removed!The tunnel connects northern and southern Europe. The opening of this runnel was such a big deal that the Germany’s leader, Chancellor Angela Merkel, France’s president, Francois Hollande, and Italy’s prime minister, Matteo Renzi, were all there to celebrate, as was Austria’s chancellor Christian Kern.It’s called the Gotthard Base Tunnel.Eventually,325 freight and passenger tra ins will go through the tunnel, relieving a lot of traffic on the roadways there and making it a more environmentally friendly option. The Gotthard Base Tunnel is a wonder of engineering! Make us want to visit it!6.When did people first have the idea of building the Tunnel?A.About 70 years ago.B.Half a century ago.C.Twenty-five years ago.D.Seven years ago.7.What can we learn about the Tunnel?A.It used to be an old tunnel.B.It has just been completed.C.It connects all European countries.D.It runs over a range of mountains.8.What may be the purpose of building the Tunnel?A.To improve traffic.B.To increase employment.C.To attract donation.D.To stop pollution.9.What can be inferred about the Tunnel?A.It will cause conflicts among countries.B.It will be of little benefit to the locals.C.It may do damage to the environment.D.It may become a tourist attraction.Ⅱ.语法填空(2020安徽高中十校联盟高三摸底)阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

2021年高考英语一轮精选练Unit2Cloning含解析新人教版选修820210831165李仕才一、阅读明白得。

(2020·昆明高三复习适应性检测)Bike Share Toronto is the city’s official bike share program，designed to give locals and visitors a fun, affordable and convenient alternative to walking, taxis, buses and the subway. There are 200 Bike Share Toronto stations and 2，000 bikes across the city, making Bike Share the most accessible way to get around and explore.How it works·Become an Annual Member or buy a Day Pass to access the system.·Find an available bike ne arby，and get a ride code or use your member key to unlock it.·Take as many short rides as you want while your pass or membership is active.·Return your bike to any station，and wait for the green light on the dock(停靠点) to make sure it’s locked.Choose a plan·For visitorsDay Pass：$7. Unlimited 30­minute rides in a 24­hour period.3­Day Pass：$15. Unlimited 30­minute rides in a 72­hour period.·For localsMonthly Pass：$25. Unlimited 30­minute rides for a month.Annual Membership：$90. Unlimited 30­minute rid es for a whole year. The Annual Membership is the best deal for locals of Toronto and other frequent riders.The first 30 minutes of each ride is included with the membership or pass price. Avoid extra fees by dropping off your bike every 30 minutes at any other station. If you keep a bike out for longer than 30 minutes at a time，you will be charged an extra $1.50 for the first 30 minutes over，$4 for the next 30 minutes，and $7 for each additional 30 minutes after that.Contact us·Customer Service：(855)898­2378·Repair Service：(855)898­2388·Corporation Partners：(855)898­2398·Employment Opportunities：(855)898­2498【解题导语】本篇文章是一篇说明文，介绍了加拿大都市多伦多实行共享单车的一些情形：单车如何运行、如何收费和联系方式。