2020高考英语一轮复习 Unit 2 Healthy eating课时作业新人教版必修3

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高考英语一轮复习 Unit2 Healthy eating课时作业新人教版必修3

课时作业(十二) Unit 2 Healthy eatingⅠ.用所给词的适当形式填空1.—How do you find James Cameron's 3D version of Titanic？—Fantastic！It can't be______________(impressive)and has brought us a wonderful experience.2.Mr.Stevenson is great to work for—I really couldn't ask for a________(good) boss.3.Whom do you expect to have________(solve) the problem of overloaded school buses？4.They were so frightened that they had the light________(burn) all night.5.There would be long talks about the strengths and________(weak) of each and every player.6.What are your company's greatest________(strong)？7.When I couldn't understand what the local people said，I realized that my English was________(limit)．8.The________(combine) of the two companies made them even more competitive.9.Doing exercise is________(benefit) to your health.10.This kind of grass is________(poison)，so keep your sheep off.答案：1.more impressive 2.better 3.solve 4.burning5.weaknesses6.strengths7.limitedbination9.beneficial 10.poisonousⅡ.完成句子1.The boy broke the school rules and the teacher__________________(让他站在教室外面)．2.The teacher__________________(不能容忍他的学生迟到)at school.3.—Our women athletes achieved great success in the Olympic Games.—Yes.__________________(没人比她们表现更精彩了)，I think.4.We__________________(决不能让他逍遥法外)killing the child.5.You__________________(本来没必要减肥的)because you are not fat at all.6.Wang Peng tried__________________(赢回)his formercustomers__________________(低折扣)．7.There is little time left，so the chairman asked me to__________________(把我的演讲限制在)20 minutes.8.With__________________(电源被切断)，all the machines stopped.答案：1.had him stand outside the classroom2.can't have his students arriving late3.No one could perform better4.mustn't have him getting away with5.oughtn't to have lost weight6.to win back；with a low discount7.limit my speech to8.the electricity cut offⅢ.阅读理解(2014·陕西卷) Why do Americans struggle with watching their weight，while the French，who consume rich food，continue to stay thin？Now a research by Cornell University suggests how life style and decisions about eating may affect weight.Researchers conclude that the French tend to stop eating when they feel full.However，Americans tend to stop when their plate is empty or their favorite TV show is over.According to Dr.Joseph Mercola，a health expert，the French see eating as an important part of their life style.They enjoy food and therefore spend a fairly long time at the table，while Americans see eating as something to be squeezed between the other daily activities.Mercola believes Americans lose the ability to sense when they are actually full.So they keep eating long after the French would have stopped.In addition，he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week.The French，instead，tend to shop daily，walking to small shops and farmers' markets where they have a choice of fresh fruits，vegetables，and eggs as well as highquality meats for each meal.After a visit to the United States，Mireille Guiliano，author of French Women Don't Get Fat，decided to write about the importance of knowing when to stop rather than suggesting how to avoid food.Today she continues to stay slim and rarely goes to the gym.In spite of all these differences，evidence shows that recent life style changes may be affecting French eating habits.Today the rate of obesity－or extreme overweight－among adults is only 6%.However，as American fast food gains acceptance and the young reject older traditions，the obesity rate among French children hasreached 17%－and is growing.语篇导读：这是一篇说明文。

备战2020年高考英语一轮精品复习Unit2 Healthy eating练习

必修三Unit 2 Healthy Eating练习Ⅰ.阅读理解AWatching what you eat can be easier said than done, but a recent study shows it might not just be about what's on your plate — it could be about how quickly it disappears.Japanese researchers followed 1,083 adults for five years, splitting them into three categories based on how quickly they ate: slow, normal, and fast. They also answered a questionnaire at the beginning of the study, sharing their diet, physical activity, and medical history. In the beginning, none of the volunteers had metabolic syndrome(新陈代谢综合征) — meaning at least three risk factors — which can lead to health problems like heart conditions and diabetes.When the participants reported back five years later, 84 had been diagnosed (诊断) with metabolic syndrome —and their eating speed was a major predictor, according to the results in the journal Circulation. The fast eaters were 89 percent more likely to have metabolic syndrome than slow and normal eaters.Just 2.3 percent of slow eaters received the diagnosis, compared to 11.6 percent of fast eaters. But that's not all. Fast eaters also saw more weight gain, larger waistlines, and higher blood sugar levels than slow eaters.The researchers say gobbling makes it easier not to take notice of fullness before your body has a chance to signal you to stop. “So when people eat fast they are more likely to overeat,” said Takayuki Yamaji, MD, study author and cardiologist at Hiroshima University in Japan in a statement.Previous research backs up the weight benefits of slow eating, too. One study of New Zealand women found fast eaters have higher body-mass indexes (指数), and a Chinese study found that both healthy and fat men ate less when told to chew 40 times instead of 15 times before swallowing. Initial research even suggests chewing your food longer could burn more calories — up to about 1,000 extra every month.语篇解读：本文是一篇说明文。

高三英语一轮复习课时作业12：Unit 2 Healthy eating

Unit 2 Healthy eatingⅠ.阅读理解AGood health is the most valuable thing a person can have, but one cannot take good health for granted(认为……理所应当). It is important to remember that the body needs proper care in order to be healthy. There are three things that a person can do to help stay in good shape: eat right food，get enough sleep, and exercise regularly.Proper nutrition (营养) is important for good health. Your body cannot work well unless it receives the proper kind of “fuel”(燃料)．Don't eat too much food with lots of sugar and fat. Eat plenty of foods high in protein (蛋白质)，like meat, fish, eggs and nuts. Vegetables and fruits are very important because they provide necessary vitamins (维他命) and minerals. However, don't overeat. It is not helpful to be overweight.Getting the proper amount of sleep is also important. If you don't get enough sleep, you feel tired and easily get angry. You have no energy. Over a long period of time a little amount of sleep may even result in a change of personality (人的个性)．Be sure to allow yourself from seven to nine hours of sleep each night. If you do, your body will feel strong and refreshed, and your mind will be sharp.Finally, get plenty of exercise. Exercise firms the body, strengthens the muscles, and prevents you from gaining weight. It also improves your heart and lungs. If you follow a regular exercise program, you will probably increase your life-span (寿命)．Any kind of exercise is good. Most sports are excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on are good examples. Sports are not only good for your body, but they are enjoyable and interesting, too.If everybody, were to eat the right foods, get plenty of sleep and exercise regularly, the world would be a happier and healthier place. We would all live to be much older and wiser.1．According to the passage, ________.A．we should always keep fitB．if we were healthy, we could spend our days in doing things with less sleepC．one can eat a lot to stay in good shapeD．one needn't take any exercise if he is healthy2．In order to keep good health, ________.A．we should eat a lot of sweetsB．one needs a large amount of fatC．people should eat according to the foods nutritionD．we must try to sleep now and then3．Eating more and sleeping less ________.A．can keep healthyB．is no good for youC．gets you more energyD．will keep your personality4．The writer explains ________in this passage.A．how to eatB．the importance of doing exerciseC．how to keep healthyD．what to eat5．The title of the article should be ________.A．Eating and ExercisingB．How Vitamins Work in Man's BodyC．Staying HealthyD．Sleeping WellBAlmost every day, we discuss the topic of health, especially for kids. But what is health? “Health” means eating well, ge tting enough exercise, and having a healthy weight. Let's read the following rules. They can help you stay healthy.①Eat a_variety_of foods, especially fruit and vegetables. We all know that eating fruit and vegetables can help us stay healthy, but many of us only eat our favorite foods. Remember that we can only get the nutrition(营养) we need by eating different kinds of food, especially fruit and vegetables.②Drink water and milk most often. Everyone knows that water is important. Besides that, kids need plenty of calcium(钙) to grow strong bones, and milk has a lot of it. Every day, you should drink at least three cups of milk (1300 milligrams of calcium), when you are 9 years old or older. You should also try to have less sugary drinks, like soda and coca. They include a lot of sugar. Sugar just includes calories, not important nutrition.③Listen to your body. When you are eating, notice how your body feels. When your stomach feels comfortably full, stop eating. Eating too much makes you feel uncomfortable. If you do it too often, it can make you unhealthy and fat.④Limit(限制) screen time. What's screen time? It's the amount of time you spend watching TV, movies, and playing computer games. The more time you spend on these sitting-down activities, the less time you spend playing sports, like basketball, and doing other activities like bike riding and swimming. Try to spend no more than 2 hours a day on screen time.6．In this passage, “health” includes all of the following EXCEPT ________.A．eating wellB．wearing comfortablyC．having a healthy weightD．doing more exercise7．The underlined phrase “a variety of” means ________.A．plenty B．a lot ofC．the rest of D．all kinds of8．As kids, we should drink at least ________ to grow strong bones.A．three cups of milk B．four cups of milkC．two cups of milk D．one cup of milk9.What's the main idea of the passage?A．How to eat healthily.B．Eating and playing are both important.C．Advice for staying healthy.D．Health is very important.Ⅱ.完形填空The Little AngelSally jumped up the moment she saw the surgeon come out of the operating room. She asked, “How is my little boy？”The surgeon said, “I'm __1__. We did all we could, but your boy didn't __2__ it.”Sally __3__ into the chair. The surgeon asked, “Wou ld you like some time with your son before he was transported to the __4__？” Sally nodded. While saying goodbye, she ran her fingers __5__ through his thick curly hair. “Would you like a lock of his hair？” the surgeon asked. Sally nodded yes. The surgeon c ut a few hairs, and handed them to Sally. The mother said, “It was Jimmy's idea to __6__ his body to the university for study. He said it might __7__ somebody else.I said no at first, __8__ Jimmy said, ‘Mom, I won't be using it after I die. Maybe it will help some other little boy spend one more day with his Mom.'”“My Jimmy had a heart of __9__，always thinking of someone else, always wanting to help others if he could.” she went on.Sally walked out of the hospital. She put the bag with Jimmy's __10__ on the seat beside her in the car. The drive home was __11__. It was even harder to enter the __12__ house. She carried Jimmy's belongings, and the lock of his hair to her son's room. She started placing the model cars and other personal things back in his room __13__ where he had always kept them. She lay down across his bed and, hugging his pillow，__14__ herself to sleep.It was around midnight when Sally __15__. Lying beside her on the bed was a letter. The letter said,“DearMom，Iknowyou'regoingto__16__ me, andmetoo. Iwillalwaysloveyou, Mom, evenmore__17__ eachpassingday. Somedaywewillseeeachotheragain. Untilthen, ifyouwantto__18__ alittleboysoyouwon'tbesolonely, that'sOKwithme. Hecanhavemyroomandoldtoystoplaywith.Don'tbesadthinkingaboutme. Idon'thurtanymore. Thecancerisall__19__. Idon'thavetostandthat__20__ anymore. TheangelsinHeavenaresotender. TheysayI'maSpecialAngel!Iloveyou, Mom.”1．A. worried B. happyC. sorryD.grateful2．A. make B. passC. winD.like3．A. knocked B. lookedC. gotD.sank4．A. house B. churchC. hospitalD. university5．A. lovingly B. anxiouslyC. patientlyD.angrily6．A. donate B. moveC. showD.lend7．A. affect B. helpC. protectD.impress8．A. for B. butC. soD.and9．A. gold B. stoneC. wisdomD. bravery10．A. toys B. clothesC. belongingsD.letters11．A. long B. smoothC. difficultD.dangerous12．A. empty B. familiarC. bigD.old13．A. roughly B. exactlyC. especiallyD.possibly14．A. put B. criedC. sentD.buried15．A. wrote B. spokeC. sleptD.awoke 16．A. understand B. forgiveC. leaveD.miss17.A. with B. aroundC. onD.in 18．A. save B. host C. adopt D.visit 19．A. lost B. gone C. cured D.spotted 20．A. depression B. sadness C. pain D.stress——★参考答案★——Ⅰ.阅读理解文章大意：本文讨论了如何保持健康：合理的饮食；充足的睡眠；适当的锻炼。

2020人教版英语高考一轮复习：课时提升作业十二必修3Unit2

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课时提升作业十二必修 3 Unit 2 Healthy eating（限时35分钟）I •阅读理解AIt is said that there ' s no such things as a fredbhireVe n if you man age to beg a bargain meal, it will not taste as good as a more expensive choice, accord ing to scie ntists.A new study has found that restaura nt goers who pay more for the food is tastier than offered for a smaller price. The experts thi nk that people tend to associate cost with quality and this changes their perception感知）of how food tastes.Scie ntists at Corn ell Un iversity studied the eati ng habits of 139 people who enjoy an Italia n buffet in a restaura nt. The price of the food was set by the researchers at either $4 or $8 for the all-you-ca n-eat meal. Customers were asked to rate how good the food tasted, the quality of the restaura nt and to leave their n ames.The experime nt showed that the people who paid $8enjoyed their meal 11%more tha n those who ate thecheaper ” buffet. Interetstalgpyiithosethe $4buffet said they felt guiltier about load ing up their plates and felt that they overate. However, the scie ntists said that both groups ate aro und the same qua ntity of food in total.Brian Wansink, a professor of consumer behavior at the university, said, “ we were fascinated to find that pricing has little effect on how much one eatsb, ut a huge effect on how you interpret the experience. ” He thinks that people enj food more as they associated cost with quality and that small changes to a restaurant can change how tasty people find their meals.In a previous study, researchers from the university showed that people who eat in bright lighting consume more than eat in less brightly lit areas.【文章大意】俗话说天底下没有免费的午餐, 但科学家表示, 即使你享用了便宜的饭菜, 它的味道也没有昂贵饭菜好吃。

高三英语一轮复习课时作业13：Unit 2 Healthy eating

Unit 2 Healthy eatingⅠ.单句语法填空1．As students, we should combine book knowledge practice.2．Nowadays more and more people have come to realize the importance of a (balance) diet to their health.3．(2015·江苏高考单选)Many of the things we now benefit would not be around but for Thomas Edison.4．The ability to keep calm is one of his many (strong)．5．Bill’s heavily debt at the moment, but hopes to pay it off when he gets paid.6．Will you content my (curious) and tell me how much it cost?7．The young man was accused of spying the secret information.8．If you don’t feel well, remember(consult) your doctor before taking any medicine.9．Wang Peng tried to win his former customers with low discount.10．Neither he nor I (be) satisfied with the result of the experiment.We both look unhappy.Ⅱ.单句改错1．As we all know, there is no limit to help the people in trouble.2．It’s unfair that he gets away from cheating because he’s a famous author.3．As far as I’m concerned, nothing is much important than health.4．The new regulation will be beneficial for everyone concerned.5．In order to make herself more beautiful, she had her hair cutting yesterday.6．As we know, reading books will benefit to us a lot.Ⅲ.用本单元所学知识完成下列写作训练(一)依据提示补全短文①As we all know, health is the most precious. In our daily life, it is important to 1.(保持学习和娱乐相平衡). 2.(however/instead/meanwhile), 3.(均衡的饮食) and regular exercise can help us keep healthy.4.(besides/however), a great many people often5. (熬夜) watching TV or playing computer games. In order to keep fit, we should reduce the time spent on surfing the Internet. It’s required that the time should be6.(limit) to three hours a day.②In addition,7. (为了我们的健康), we should do more exercise and have enough sleep. ③It will do good to us both physically and mentally.(二)按要求将词汇句式升级1．用本单元高级词汇替换加黑单词或短语(1)reduce→(2)do good to→2．按要求改写句式(1)用“否定词＋比较级”结构改写句①As we all know, .(2)用非限制性定语从句把句②、句③合为一句In addition, for the benefit of our health, we should do more exercise and have enough sleep, .——★参考答案★——Ⅰ.单句语法填空1．with2．balanced3．from4．strengths5．in6．curiosity7．on8．toconsult9．back; a10．amⅡ.单句改错1．help→helping2．from→with3．much→more4．for→to5．cutting→cut6．去掉toⅢ.用本单元所学知识完成下列写作训练(一)依据提示补全短文1.keepthebalancebetweenstudyandpleasure2.Meanwhile3.abalanceddiet4.However5.stayup6.limited7.forthebenefitofourhealth(二)按要求将词汇句式升级1．(1)cutdown(2)benefit2．按要求改写句式(1)nothingismorepreciousthanhealth.(2) whichwillbenefitusbothphysicallyandmentally.。

高三英语一轮复习课时作业7：Unit 2 Healthy eating

Unit 2 Healthy eatingⅠ.单词拼写1．He lost his ________ (平衡) and fell down.2．His ________ (好奇心) to learn new knowledge is quite strong.3．They decided to ________ (加强) the defense of their country.4．Scientists are ________ (调查) into the cause of cancer.5．That fence shows the ________ (界限) of my garden.6．Some films ________ (使联合) education with recreation.7．The modern actress who has a ________ (纤细的) waist often appears on TV.8．It is very important to know your own strengths and ________ (不足)．9．Proper ________ (饮食) and exercise are both important to health.10．There was a ________ (顾客) coming in to buy some food.Ⅱ.完成句子1．Everybody ________ ________ ________ your everlasting complaints.大家对你的喋喋不休的抱怨感到厌倦了。

2．You must ________ ________ ________ all your worries and have a good rest.你必须排除一切烦恼好好休息。

3．She is trying to ________ ________.她正在努力减肥。

【2019-2020】高三英语一轮复习基础必备Unit2Healthyeating课时作业新人教版必修3

【2019-2020】高三英语一轮复习基础必备Unit2Healthyeating课时作业新人教版必修3[基础回顾]Ⅰ.单句语法填空(导学号02516102)2．Being a good teacher，you should know your students' strengths (strong) and weaknesses.3．Those who enjoy eating wild animals say that they not only enjoy the taste but also want to satisfy their curiosity (curious)．5．—How was your recent trip to Sichuan?—I've never had a more pleasant (pleasant) one before.6．Tickets are limited (limit) and will be allocated to those who apply first.7．The doctor told Bob his heart was in poor condition and that he must cut down on alcohol and smoking.8．Bill's heavily in debt at the moment，but hopes to pay it off when he gets paid.9．The policeman can't have the thief getting away with stealing people's money.10．I'm so sorry.I shouldn't have lied to you.Ⅱ.单句改错(每句一错)(导学号02516103)1．—Would you like some more chicken?—No，thanks.I am at a diet and I'm trying to lose weight. at→on2．The length of the article should be limited 400 words or so. limited后加to3．Harry has been out of work for six months，so he has difficulty earned his living. earned→earning5．You are working too hard.You'd better keep balance between work and relaxation. keep后加aⅢ.佳句写作(导学号02516104)1．下公共汽车时我的左腿摔断了。

教师课件：2020届高三英语一轮复习 Unit 2 Healthy eating课时作业新人教版必

课时作业(十二) [必修3 Unit 2 Healthy eating](限时：45分钟)Ⅰ. 语法填空“If you're talking to me in a noisy restaurant and my nervous system is good at locking onto the sound of your voice, I can understand 1.________ you say better.”The research at Northwestern University shows that playing a musical instrument is good 2.________ your brain. And the brain remembers how to lock onto the important sounds, 3.________ our ears may not work as well as we age, and that helps us to hear better.A scientist, living in France twenty years ago, 4.________ (write) about what he called the “Mozart Effect”. He said that it could be helpful to the brain when 5.________ (listen) to the classical music of Mozart. Some researchers said that Mozart's music would make you much 6.________ (smart), or even help your brain cure some health 7.________ (order). Others said that there was nothing special about Mozart's music. Any kind of high energy music would work. So if the cost of a musical instrument or music lessons is too costly, can we get 8.________ same brain experience just by listening?Usually people have teachers, or they can teach 9.________ music. But the point is that they're actively playing a musical instrument and engaging 10.________ making music instead of listening to music passively.Ⅱ.阅读理解AYou know eating fruit and vegetables does good. But do you know it can also make you look good? People who increased their intake over just six weeks developed a healthy glow and appeared more attractive, researchers found. Scientists at St. Andrews University found eating them slightly increased yellow and red pigments in the volunteers' skin. They monitored the food intake of 35 people and took pictures of their faces, arms and hands using a sensitive camera at the start, and after three and six weeks. Increasing their intake of greens by 2.9 portions a day was found to make the person look more healthy and an extra 3.3 portions could enhance their attractiveness, when their photographs were rated by others.Fruit and vegetables are rich in carotenoids(类胡萝卜素), which are known to protect against cell damage from pollution and UV rays, and can also prevent age－related diseases including heart disease and cancer. But while it was known eating extreme amounts of certain vegetables such as carrots could turn skin orange, it was not known a small increase was perceptible(被觉察) to others and was seen as appealing.A camera measured changes to the skin's redness, yellowness and lightness, and found it significantly changed in people who naturally increased their intake. These changes were not evident in three weeks. Using light sensors, the researchers showed these red and yellow hues were linked with the levels of carotenoids in their skin. There are hundreds of carotenoids but those thought to have the most dramatic effect are lycopene(番茄红素), which gives tomatoes and red peppers their red colour and beta－carotene, found in carrots as well as broccoli, squash and spinach. Skin colouris also affected by chemicals called polyphenols(多元酚), found in apples, blueberries and cherries, which cause blood rush to the skin surface.11．What do we know from the research?A．If you take in a little more fruit and vegetables, you will obviously look more attractive in three weeks.B．The researchers took the pictures of 35 people in the research at different stages. C．Increasing your intake of greens by 2.9 portions a day can greatly improve your health.D．People who increased their intake of greens by 3.3 portions a day were found the most attractive after six weeks.12．Which of the following is NOT the function of carotenoids?A．They can protect against cell damage from pollution and UV rays.B．They can prevent heart disease and cancer.C．They can prevent age－related diseases.D．They can keep you in good health.13．Which of the statements is NOT true according to the passage?A．We've already known eating extreme amounts of carrots can turn skin orange. B．We knew in the past that eating a few more carrots could make us look appealing. C．The research showed the improvement in skin is linked with the levels of carotenoids in it.D．Among hundreds of carotenoids, lycopene is thought to have the most dramatic effect on the skin.14．We can infer from the passage that ________．A．skin's redness, yellowness and lightness make a person look more healthy and attractiveB．carotenoids have the same effect as lycopeneC．it is carotenoids that give tomatoes and red peppers their red colour D．both beta－carotene and polyphenols affect skin colour by causing blood rush to the skin surface15．Which can be the best title of the passage?A．Eating fruit and vegetables does goodB．Fruit and vegetables are rich in carotenoidsC．How to become attractiveD．Eating fruit and vegetables makes you look goodBPhysical fitness refers to good health, and is the result of regular exercise, proper diet and nutrition, and proper rest for physical recovery. A person who is physically fit will be able to walk or run without getting breathless and he or she will be able to carry out the activities of everyday living and will not need help. How much each person can do will depend on their age and whether they are a man or woman.A physically fit person usually has a normal weight for height. The relation between height and weight is called the Body_Mass_Index. A taller person can be heavier and still be fit. If a person is too heavy or too thin for the height, it may affect the health.Mental health refers to a person's emotional and psychological well－bei ng. “A state of emotional and psychological well－being in which an individual is able to use his or her thinking and emotional (feeling) abilities, function in society, and meet the ordinary demands of everyday life.”One way to think about mental health is by looking at how well a person functions. Feeling capable and efficient, being able to handle normal levels of stress, having good friends and family, leading an independent life, being able to “bounce back” and recovering from hardships, are all signs of mental health.Public health refers to trying to stop a disease that is unhealthy to the community, and does not help in long life or promote your health. This is fixed by organized efforts and choices of society, public and private clubs, communities and individuals.It is about the health of many people, or everybody, rather than one person. Public health stops instead of encouraging a disease through surveillance(监督) of cases. To prevent being sick, it is good to do healthy behaviours, such as hand washing, vaccination programmes and so on. When infectious diseases break out, washing hands may be especially important.16．What is the best title of the passage?A．Physical, mental and public healthB．Something about healthC．Importance of healthD．Three healthy lives17．What does “Body Mass Index” in Paragraph 1 consist of?A．Exercise, proper diet and nutrition.B．Abilities, functions and demands.C．Recovery, independence and relation.D．Height, weight and their relation.18．What are the signs of mental health?A．Living an independent life and suffering from hardships.B．Reducing normal levels of stress and handling bounce back.C．Increasing emotional demands and psychological well－being.D．Living an independent life and owning good friends and family.19．Once bird flu takes place, that refers to ________．A．the problem of physical healthB．the problem of public healthC．the problem of mental healthD．the importance of washing hands20．What can promote your body health according to the passage?A．Family, society and individuals.B．Private clubs, communities and individuals.C．Regular exercise, proper diet and nutrition.D．Hand washing, vaccination and other healthy behaviours.Ⅲ.读写任务阅读下面的短文，然后按照要求写一篇150词左右的英语短文。

高考英语一轮复习提能练(十二)Unit2Healthyeating(含解析)

Unit 2 Healthy eatingⅠ.阅读理解A(2020·东北三省四市高考模拟) Until last year，Borris would never turn down a pork steak.By the time his owner，Annemarie Formoy，entered him in the PDSA Pet Fit Club petition，he was 28kg—almost double his remended weight.Thanks to a tailored sixmonth diet and exercise，he is now 7kg lighter.Borris，at his heaviest，was not alone.The worldwide rate of pet obesity(肥胖症) lies between 22% and 44%.The reasons are fairly predictable.Owners of overweight dogs feed them more snacks and table leftovers，are more likely to have their pets present as they prepare their own meals and are less likely to walk them daily.Owners of obese cats tend to use food as a reward and play with them less.But obesity also seems to be occurring even in some wild animals that aren't being overfed or underexercised.If these findings are true，something else must be driving obesity and uncovering those could help solve our own problems with the condition.“Labradors are consistently the headline act when it es to overweight dogs，”says Eleanor Raffan，a veterinarian and geneticist.She and fellow researchers discovered that a genetic mutation(基因变异) present in around a quarter of Labradors was associated with obesity.For each copy of the mutation—which occurred in a gene called POMC—a dog was about 2kg heavier.Most of the animals the researchers studied had one copy of the mutation，but fewer had two.“These are dogs always in the kitchen when owners are preparing food，sticking around scouring_a_titbit even if there's not much chance of getting food，or eating disgusting stuff on walks，” Raffan says.“But they're not doing that because it's fun.They're doing it because they're hungry.”That's because POMC mutations disturb the brain's function of controlling food intake and energy consumption.As a result，the behaviour of these Labradors beesvery foodmotivated.语篇解读全球宠物肥胖率在22%到44%之间，弄清楚宠物肥胖的原因对人类应对肥胖问题也很有启发。

高三英语一轮复习课时作业14：Unit 2 Healthy eating

Unit 2Healthy eatingⅠ.单词拼写1. He lost his ________ (平衡)and hurt himself when going downstairs.2. This picture book can best satisfy children’s __________(好奇心)about nature.3. A person’s life is ____________(有限的), but his love is lasting.4. Some movies ______(结合)education with entertainment.5. As I said before, we need to focus on ________(顾客)and their needs.6. You should know your ________(强项) and weaknesses before applying for a job.7. A healthy ________(饮食) should contain all the necessary vitamins.8. In order to lose ________(重量)，you must say no to fast food.9. He ________ (叹息) deeply after learning that he had lost the contest.10. The newly-built park will ________(使受益)the people living there.Ⅱ.用所给词的适当形式填空1. The team won at last because these players made a very good ________ (combine).2. All bills that are paid in cash will be ________ (discount) by three percent.3. There are still some ________ (weak) in the legs, but her general condition is good.4. It’s very important to have a ________ (balance) diet for us.5. Will you content my ________ (curious) and tell me how much it cost?6. You could see from his face that he was ________ (lie).7. I’ve never been to so mysterious a place with so beautiful ________ (scene).8. I have only a ________ (limit) knowledge of this subject.9. The ability to keep calm is one of his ________ (strong).10. It is known to all that fresh air and good food are ________ (benefit) to the health. Ⅲ.单句语法填空1. He is curious ________ what contains in the bag.2. No one could do any ________ (well).3. ________ (tire) of the same meal at home, he decided to eat out.4. I can’t stand ________ (sleep) with a loud noise going on.5. I wish I ________ (can) fly freely like a bird in the sky.6. He is fond ________ swimming while I am keen ________ running.7. The other day Tom ________ (come) across his friend on the beach.8. It’s bad manners to spy ________ others or glare ________ others.9. The man had to be on ________ diet to lose weight.10. Don’t be particular ________ food. It’s bad for your health.Ⅳ.课文浓缩语法填空Wang Peng ran a restaurant which was always full of __1__ (custom) by lunch time. But one day, a strange thing happened that few people came to his restaurant. Soon he found that people went to a newly-opened one called Yong Hui’s __2__ (slim) restaurant. __3__ (curious) drove him into Yong Hui’s, where he was given a menu. To his surprise, he found that the food there was simple and the prices were high. But Yong Hui told the customers that they would lose __4__ (weigh) by eating there. He couldn’t have Yong Hui __5__ (get) away with telling lies, so he threw down the menu and went to a library. After __6__ (do) some research, he realized that Yong Hui’s restaurant didn’t serve people with enough energy-giving food. __7__ the other hand, Wang Peng’s menu had little __8__ (protect) food. Since neither of them was providing a __9__ (balance) diet, it was clear that they ought __10__ work together to serve healthy food.【『答案』『解析』】Ⅰ.单词拼写1. balance2.curiosity3.limitedbine5. customers6.strengths7.diet8.weight9.sighed10. benefitⅡ.用所给词的适当形式填空1. combination2.discounted3.weaknesses4.balanced5. curiosity6.lying7.scenery8.limited9.strengths10. beneficialⅢ.单句语法填空1. about『解析』be curious about 对······好奇。

备战2020年高考英语一轮精品复习Unit 2 Healthy eating 练习

必修3 Unit 2 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．It is important to have a balanced, healthy diet (日常饮食) in our daily life.2．People have always been curious (好奇的) about how life on earth exactly began.3．The owner of the restaurant is kind-hearted and is always eager to please all his customers (顾客)．4．We consider it necessary to combine (结合) theory with practice.5．His kind wife treated us to a delicious dinner and we all considered her to a super hostess (女主人)．6．Many people experience difficulty in paying off their debts (债务)．7．In order to be more charming and slimmer (苗条的), girls tend to go on a diet.8．The patient is recovering slowly; therefore, you had better choose some foods which digest (消化) more easily.9．If you place orders now, we would give you a 5% discount (折扣)．10．If you don't feel well, remember to consult (咨询) your doctor before taking any medicine.Ⅱ.语境语法填空1．In my opinion, good health ❶lies (lie) in regular exercise and positive attitude.Meanwhile, you ought to keep the ❷balance (balanced) between study and relaxation.In addition, even if your time is ❸limited (limit), do take exercise regularly to build up your ❹strength (strong), which will be of great ❺benefit (beneficial) to your health.2．As far as I'm concerned, nothing is ❶more_precious (precious) than keeping fit.To lose weight, you ought to cut ❷down on fatty foods and get actively involved in exercise, and then ❸before long you will surely feel more ❹healthy (health) and energetic.3．My uncle helps people to stay strong and healthy at a fitness centre by ❶combining (combine) physical training with a healthy lifestyle.He ❷consults (consult) with the trainees before designing training ually the amount of exercise for each trainee per day ❸is_limited (limit) to an hour or so.Exercising immediately after meals is forbidden as people need to allow their food ❹to_digest (digest)．He also recommends every trainee attach importance to balancing work and relaxation.He says eating proper foods and avoiding unhealthy habits are supposed ❺to_benefit (benefit) a lot.Ⅲ.语境改错1．文中共有4处错误，每句中最多有两处，请找出并改正。

高考英语一轮复习方案课时作业 Unit 2 Healthy eating

手惰市安逸阳光实验学校课时作业(十二)[必修3 Unit 2 Healthy eating](限时：35分钟)Ⅰ.单项填空1．A good teacher should leave some time for the students to ________ the knowledge.A．introduce B．receiveC．digest D．accept2．Jennifer，who is my best friend，said she would go abroad to further her education ________．A．before long B．long beforeC．shortly after D．very fast3．[2012·四川卷] Before driving into the city, you are required to get your car ________．A．washed B．washC．washing D．to wash4．Knowledge and learning are important if we want to be successful, but they may also ________ our thinking.A．direct B．limit C．change D．improve5．I have a really bad headache，and I have to ________ a doctor about my pains.A．consult B．remind C．inform D．advise6．—You ought to have made an apology to Tom yesterday evening.—Yes, I know I ________．A．ought to have B．have toC．should D．must have7．If he can ________ his ability with hard work，he should be very successful.A．realize B．developC．combine D．train8．—You don't seem to enjoy your meal very much.—Not really, I am just ________．A．on a diet B．on dietsC．on purpose D．on business9．It's unfair that he________cheating because he's a famous author.A．makes use of B．gets away withC．gets rid of D．ends up with10．Before the war broke out, thousands of people ________possessions in safe places they could not take with them.A．threw away B．put awayC．gave away D．carried away11．The protestors urged their government to take measuresto________their carbon emission to reduce greenhouse effect.A．cut off B．cut upC．cut out D．cut down12．As we all know，Mike has an excellent understanding of his own ________ and weaknesses.A．strengths B．valueC．techniques D．energy13．—Are you satisfied with what she has done?—Not a little. It can't be ________．A．any worse B．any betterC．so well D．so bad14．I have a lot ________ in the coming weekend, so I can't spare any time to have a rest.A．completing B．to completeC．completed D．being completed15．More and more Chinese people have realize d that they should go on ________ balanced diet and do ________ exercise every day.A．a; / B．the; anC．the; the D．/; anⅡ.阅读理解AEmployees are being flooded with too much information that has little to do with their work, according to a new survey.On average, whitecollar workers spend 51 percent of their work time receiving and processing information. Only one third of it was relevant to their work, the survey found. Information overload for whit ecollar workers has become a global issue. The huge amount of information has already affected their efficiency in management as well as their performance at work.Buried with emailsEvery morning, a secretary at the human resources department of an auto parts company opens her email box, only to find it crammed with at least 50 unread mails.For her, even scanning through these emails every day takes at least half an hour. Some of her colleagues are not so lucky—they have to read at least 100.Bothered with callsTelephone calls are also causing a problem. More than 40 percent whitecollar workers choose mobile phones as the preferred way to communicate important and urgent business matters. Talking saves time and energy over the clicking, reading and replying to emails, but phone calls are also more distracting(分心的). While answering a call, a clerk is likely to put away a much more important task at hand and start the business being talked about on the phone.Solution? Not yetMany companies start with providing staff with better computers, better Internet access and more advanced gadgets(小装置). For example,staff members above a certain level in one company will be provided with a blackberry phone for easier access to their emails. The company has also organized many lectures on efficien t ways of email management. Yet most whitecollar workers think their companies can do more.16．What does the new survey find ab out whitecollar workers?A．They spend 51 percent of their work time on meetings.B．Only half of the information they receive is useful.C．Over 60 percent of them prefer to use the telephone.D．Some of them have to read at least 100 emails every day.17．Telephone calls cause a problem because ________．A．they take up the time to receive and send emailsB．they are often not answeredC．they are mostly not about businessD．they may lead to change of work schedule18．How do some companies try to solve the problem of information overload?A．They start to give staff a pay rise.B．They plan to employ more people.C．They provide employees with more advanced equipment.D．They organize lectures on how to reduce stress.19．What is the major issue discussed in this text?A．Poor management leads to inefficiency at work.B．Junk mail is causing big trouble.C．Whitecollar workers suffer from information overload.D．Better computers are in need in workplaces.BScientists who try to predict earthquakes have gotten some new helpers recently—animals.That's right, animals. Scientists have begun to understand what farmers have known for thousands of years. Animals often seem to know in advance that an earthquake is coming, and they show their fear by acting in strange ways. Before a Chinese quake in 1975, snakes awoke from their winter sleep early only to freeze to death in the cold air. Cows broke their halters(缰绳) and tried to escape.Chickens refused to enter their cage. All of this unusual behavior, as well as physical changes in the earth, warned Chinese scientists of the coming quake. They moved people away from the danger zone and saved thousands of lives.One task for scientists today is to learn exactly which types of animal behavior predict quakes. It's not an easy job. First of all, not every animal reacts to the danger of an earthquake. Just before a California quake in 1977, for example, an Arabian horse became very nervous and tried to break out of his enclosure. The Australian horse next to him, however, remained perfectly calm. It's also difficult at times to tell the difference between normal animal restlessness and“earthquake nerves”．A zoo keeper once called earthquake researchers, saying that his cougar had been acting strangely. It turned out that the cat had an upset stomach.A second task for scientists is to find out exactly what kind of warnings the animals receive. They know that animals sense far more of the world than humans do. Many animals can see, hear, and smell things that people do not even notice. Some can sense tiny changes in air pressure, gravity, or the magnetism of the earth. This extra sense probably helps animals predict quakes.A good example of this occurred with a group of dogs. They were shut in an area that was being shaken by a series of tiny earthquakes.(Several small quakes often come before or after a large one.) Before each quake a low booming sound was heard. Each boom caused the dogs to bark wildly. Then the dogs began to bark during a silent period. A scientist who was recording quakes looked at his machine. It was acting as though there were a loud noise too. The scientist realized that the dogs had reacted to a booming noise. They also sensed the tiny quakes that followed it. The machine recorded both, though humans felt and heard nothing.In this case there was a machine to monitor what the dogs were sensing. Many times, however, our machines record nothing extraordinary, even though animals know a quake is coming. The animals might be sensing something we measure but do not recognize as a warning.Discovering what animals sense, and learning how they know it is a danger signal, is a job for future scientists.20．Through the passage the writer hopes to explore ________．A．why animals send a danger signal before an earthquakeB．how animals know when an earthquake is comingC．why animals not humans have a good sense of dangerD．how much animals know about an earthquake21．During an earthquake in China in 1975 ________．A．chickens refused to go out of their cageB．snakes were frozen to death in their cavesC．snakes awoke from their winter sleep earlierD．cows broke their halters and escaped from their sheds22．Which of the following is one of earthquake nerves according to the passage?A．An Arabian horse tried to escape from his enclosure.B．A cougar had an upset stomach unexpectedly.C．An Australian horse was perfectly calm.D．A cat acted very strangely in a zoo.23．The scientists did an experiment with a group of dogs to ________．A．find out that the machine could record unusual happeningsB．compare the reactions of animals with those of humansC．prove that animals could sense more than humansD．find out what exact warnings animals sendⅢ.短文填词Dear Jenny，In your letter, you asked me something about how to keep healthy. Here are my tips. First 24.________ all, try to keep a 25.________ (平衡) diet. Every day, you'd better eat different kinds of food,26.________ as fish, meat and beans, 27.e________ fresh vegetables and fruits. Also, do remember not to eat too much 28.________ (糖) for your age. Secondly, 29.t________ regular exercise is necessary for you. You can do sports which 30.________ (适合) yourself, like running and swimming. Thirdly, be sure that you have 31.p________ of sleep. Never stay up late. 32.F________， always be optimistic about anything unlucky 33.________ comes your way so you can stay in a good mood for the challenges in life.Best wishes!Yours，Li Hua参考答案课时作业(十二)Ⅰ.1.C 考查动词辨析。

高三英语一轮复习 Unit 2 Healthy eating课时作业新

课时作业(十二) [必修3Unit 2 Healthy eating](限时：40分钟)Ⅰ.多项选择1．With international ________ and education exchanges increasing every year, the number of Chinese students studying abroad has increased rapidly. A．cooperation B．competitionC．construction D．conflict2．I was going to take a photo of the worldfamous painting when I noticed a ________ saying “No Photographing”．A．signal B．signC．sigh D．spelling3．When asked about the film to be shown this week, the teacher said that he was trying to find one that ________ education with recreation.A．conducted B．concludedC．combined D．connected4．Considering the foggy weather, we can't ________ the possibility of the train coming late again.A．predict B．discountC．decline D．reserve5．A good teacher should leave some time for the students to ________ the knowledge. A．introduce B．receiveC．digest D．accept6．No matter when people ________ him about their financial troubles, the lawyer is always ready with advice.A．acquire B．consultC．indicate D．inform7．To reduce wasting, the governments at all levels will ________ the cost in official business reception.A．cut down B．turn downC．set down D．settle down8．Despite the fact that it is still not fully understood, more and more farmers are ________ this modern technology of agriculture.A．benefiting from B．convincing ofC．suspecting of D．protecting from9．He has made little preparation for the interview, so the chance of him succeeding in it is ________．A．slim B．fantasticC．obvious D．gentle10．China has been pushing the reform of public hospitals ________ all its citizens. A．in charge of B．for the purpose ofC．in honour of D．for the benefit ofⅡ.阅读理解ATaking a bath provides a variety of health benefits, for example, keeping your body clean and relaxing, but if we are ever ill in bed and can't get up, we will be thankful for the nurse who helps us get clean.While I am not a nurse, and have never given anyone a bath, I would imagine that it would take a lot of sympathy and patience to do so.Yet those who attended the International Conference on Intelligence Robots and Systems Conference last month were introduced to Cody, a robot that can bathe human beings.The robot has a base that can be turned to all directions, two humanli ke arms, and flexible wrists (腕)．It uses a camera and laser range finder to locate parts of the human body.It then uses bath gloves to clean with a little pressure.The robot was designed at the Georgia Institute of Technology.Charles Kemp of the Health Care Robotics Lab is the senior researcher for the project.In a test run, Cody was able to remove 96% of a test subject's dirt—not bad for a robot.But don't go asking for Cody for Cody yet—he's still a model.Yet researchers believe that one day Cody may take the place of nurses for this task.Researchers claim that Cody will afford patients increased private information.I suppose that would depend on the patient.Even so, I can appreciate the need.We don't have enough nurses to go around, and those places tha t are the most shorthanded, for example, nursing homes, are those that have the most patients who are unable to bathe themselves.Still, before I get there, I hope they think of a better way to solve the problem.11．The writer thinks bathing others must ________．A．bring you various health benefitsB．make you feel thankfulC．take you a lot of patienceD．make you feel dignified12．What is the third paragraph mainly about?A．Why and where Cody was designed.B．What Cody looks like and who designed it.C．What Cody can do and where it will work soon.D．How Cody works and what has made that possible.13．We know from the fourth and fifth paragraphs that ________．A．Cody can bathe patients better than a real nurseB．robots like Cody are being produced in large numbersC．Cody can take the place of nurses completely in hospitalsD．researchers think Cody can protect patients' personal information14．There is a need for Cody because ________．A．there are not enough nursesB．it can bring down the cost of nursingC．people are becoming lazierD．there are too many nursing homesBWhen one person gains weight, his close friends often follow.Researchers have just offered evidence in a study that says obesity(肥胖) appears to spread through social ties.But the findings might also offer hope.If_friends_help_make_obesity_acceptable,_then_they_might_also_be_influential_in _losing_the_fat.The researchers note that support groups are already an effective tool in dealing with other socially influenced problems, like alcoholism(酗酒)．The findings appeared in the New England Journal of Medicine.The researchers used information collected from 12，000 people.It was collected between 1972 and 2003 as part of the Framingham Heart Study.The information was highly detailed.There was even contact information for close friends of the people in the study.The researchers examined more than 40，000 social ties.They found that a person's chances of becoming severely overweight increased by 57% if a friend had become obese.A sister or brother of a person who became obese had a 40% increased chance of becoming obese.The risk for a wife or husband was a little less than that.Nicholas Christakis of Harvard Medical School was a lead researcher in the study.He says there is a direct causal relationship between a person getting fat and being followed in weight gain by a friend.The study found that the sex of the friends was also an influence.In sam esex friendship, a person had a 71% increased risk of becoming obese.Men had a 44% increased risk of becoming obese after weight gain in a brother.In sisters, it was 67%.The researchers also considered the effect of where people lived in relation to each other.James Fowler of the University of California was the other lead expert.He says a friend who lives a few hundred kilometres away has as much influence as one in the same neighbourhood.He says the study demonstrates the need to consider that a major part of people's health is tied to their social connections.Both researchers say their research shows that obesity is not just a private medical issue, but also a public health problem.15．What does the underlined sentence in Paragraph 2 mean?A．Obesity has a negative influence on close friends.B．Friends might also play a part in losing weight.C．One might have a positive influence on one's friend.D．Friendship may have little to do with one's health.16．Which of the following statements would Nicholas Christakis agree to?A．If one gains weight, one's friends are likely to get fat.B．Social problems like alcoholism are easy to deal with.C．Friends usually don't follow each other to lose weight.D．One might influence others on their social behaviour.17．James Fowler seems to believe that________ .A．a friend who lives nearby affects us mostB．one's health has nothing to do with friendsC．social connections have no effect on one's lifeD．a friend living far away has the same influence as one's neighbour18．The author makes his point clear in the text that________．A．a major part of people's health is based on their genesB．friends living closer have a greater influence on one's healthC．social relationship is closely connected with people's healthD．people's mental condition is subject to social connectionsⅢ.完成句子19．Owing to the guard's carelessness, the thief was lucky to escape. Otherwise he ____________________ stealing so many valuable things.(get)由于保安的疏忽大意，小偷侥幸逃脱，否则的话他不可能偷走那么多贵重物品。

2019-2020年高三英语一轮复习Unit2Healthyeating课时作业新人教版必修

2019-2020年高三英语一轮复习Unit2Healthyeating课时作业新人教版必修Ⅰ.阅读理解A(xx·银川检测)Crossing your legs is an extremely mon habit; most people don't even notice that they're doing it when they sit down. While you may find it fortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason for this is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won't feel any immediate effects, but repeated, drawnout increases in blood pressure can cause longterm health issues. So, planning to sit for a long period of time? Don't keep your legs crossed.“Crossing your legs at the knee can also cause pres sure on the major nerve in your leg that passes just below your knee and along the outside of your leg，” explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis (麻痹) of some of the muscles in your foot and leg, preventing you from being able to raise your ankle—what we know as that “pins_and_needles” sensation. While the feeling of disfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.【文章大意】本文是一篇说明文。

高三英语一轮复习课时作业8：Unit 2 Healthy eating

Unit 2 Healthy eating一、单元扣点训练Ⅰ.短语填空lose weight; get away with; tell a lie; win...back; earn one's living; in debt; cut down; before long; put on; rather than1．Jack has ________ five kilos since he quit smoking.2．Gary has been ________ since his factory closed half a year ago.3．You smoke too much—you should try to ________.4．As a parent, if you often ________，how can you expect your children to be honest?5．The kids were playing in the mud and ________ they were covered in it.6．I don't know how they manage to ________ paying such low wages.7．I spent an hour every day taking exercise in order to ________.8．After the scandal，he faces a hard struggle to ________ public support before the next election.9．________ risk breaking up his marriage he told his wife everything.10．She has been ________ by teaching since she graduated from college.Ⅱ.完成句子1．Wang Peng sat in his empty restaurant ______________________(感到十分沮丧). (feel) 2．At the library, Wang Peng ________ (吃惊地发现) that his restaurant served far too much fat. (find)3．I found your menu so limited ______________________(所以我也就不着急了). (stop) Ⅲ.模仿造句1．By now his restaurant ought to be full of people.[翻译]他两个小时前动身的，现在该到那里了。

高三英语一轮复习课时作业1：Unit 2 Healthy eating

Unit 2 Healthy eatingⅠ.单词拼写1．To live a long and healthy life，we must learn to have a balanced ________(日常饮食)．2．She said that taking exercise is a good way of keeping ________(苗条的，纤细的)．3．As students，we should ________(联合；结合)book knowledge with practice.4．It's certain that people in that town will ________(受益)from the new hospital.5．You must ________(权衡) the advantages against the disadvantages.6．________(好奇心) drove him into the dark room without permission.7．They know me—I am a regular ________(顾客)．8．He thought that crying is a sign of ________(软弱)．9．She didn't have the ________(力气) to climb the hill.10．His words are full of ________(谎言) about the matter.Ⅱ.短语填空before long，win back，lose weight，earn one's living，get away with，in debt，rather than，cut down1．Gary has been ______________since his factory closed half a year ago.2．You smoke too much—you should try to______________.3．The kids were playing in the mud and ______________they were covered in it.4．I don't know how they manage to ______________paying such low wages.5．I spent an hour every day taking exercise in order to______________.6．After the scandal，he faces a hard struggle to___________public support before the next election.7．______________stay at home，he preferred to play chess with his friends after supper. 8．She has been ______________by teaching since she graduated from college.Ⅲ.完成句子1．He____________(躺在) on the sofa and soon fell asleep.2．An increasing number of clients________________(向他们咨询) social security changes. 3．If you cheat in the exam you'll never________________(逃脱惩罚)．4．I can ________ agree with you ________.我非常同意你。

高考英语一轮复习 Unit 2 Healthy eating课时作业

入舵市安恙阳光实验学校Unit 2 Healthy eatingⅠ.阅读理解ABiologist Robert Pitman and his colleagues tracked orcas，or killer whales，and humpback whales off the coast of Western Australia.To research further，the scientists attached a tracker to a female orca，which allowed them to use satellites to monitor her movements.They followed her for six days.During that time，the orca attacked eight young humpback whales.During the seven attacks，the orca killed the humpback whale calf (幼兽) on three occasions.But the story doesn't end there.Humpback whales themselves are popularly thought to be large but generally，passivecreatures.Pitman's study findings may let people think otherwise.When chased by orcas，humpback whales are known to try to outswim orcas.They are thought to do this at high speed so that the orcas can't keep up.On some occasions，the humpback whales sought out protection.They swam to shallow water，nearby reefs，or even under the researchers' boats.These ways often reduced the attack.But at other times，the humpback whales decided to stay and fight.As the orcas approached，the mother humpback would sometimes move her calf to her side，or lift it out of the water using her head or flippers.She also blew huge breaths of air to disturb the orcas，and lunged or charged at them，slashing(劈)and slapping her tail and flippers.Perhaps most surprisingly，humpback whales also have adult “escorts (护卫队)” that try to protect calves that are not their own，joining the mother in defending the smaller whale.These escort whales either charged at the orcas，or placed themselves between the attackers and calves，slashing their tails and flippers.Despite the efforts of the mother whales and escorts，the orcas were more often than not successful in their attacks.But the presence of the escorts did reduce how many times a whale calf was killed.[语篇解读] 本文是一篇说明文，主要讲的是科学家使用科学仪器来观察鲸是如何追杀驼背鲸及后者是如何反击和保护幼小的驼背鲸的。

高三英语一轮复习课时作业16：Unit 2 Healthy eating

Unit 2 Healthy eatingⅠ.语法填空I had hardly sat down on the train and opened a bar of chocolate __1__ a really old man with huge bags sat down across from me.I said hello__2__him, smiling sweetly and then I suddenly thought, “Why not offer him a piece of chocolate？”So I did.He was quite__3__ (surprise), but accepted and thanked me.He said that people didn't usually do things like this for__4__(strange) —at least that was what I understood, because he was speaking a really__5__(usual) dialect, and the train was loud.Then he opened one of his bags and gave me__6__ handful of freshly picked cherries,__7__(explain) that he had just taken them from his orchard.The cherries were really lovely, better than those in the shops, and I enjoyed them very much.It had been just an impulse (冲动) to offer him a piece of chocolate, but if I__8__(do) so, I would never have tasted those lovely cherries,__9__I didn't even know he had at the time.Life is about giving and taking, and it's __10__ (general) true that if you give, you will receive.Ⅱ.短文改错I am writing to tell you anything about the transportation in China.Over the past few decades we have developed an amazed network of public transportation.Besides, we have been decided to make efforts to make them much better.I am sure a network will satisfy your needs for traveling everywhere more convenient.People usually chose the means of transportation based with some aspects, such as the cost and the time needed.For example, businessmen are more likely travel by plane or highspeed train to save time while office worker tend to take buses or drive to work themselves.Ⅲ.书面表达假定你是李华，你校将举办一场交通安全知识讲座，你打算邀请外教John参加。