人教版高中英语选修六Unit3 同步检测
人教版高中英语选修六Unit3 A Healthy Life同步精练及参考答案
人教版英语选修6 Unit3 A Healthy Life同步精练及参考答案Unit Three A Healthy LifeI. 用所给词的词组适当形式填空1. She __________________ (get) a panic when she thought she’d forgotten the tickets.2. He insisted on carrying on the experiment ________________ (spite) all kinds of setbacks.3. Permanent white rubbish can _______________ (damage) the environment.4. The television station apologized for the interference(信号干扰), which was ___________ (due) bad weather conditions.5. If you are not planning on breastfeeding, you have to __________ (decide) a kind of powder.6. No man ___________________ (feel) laughing when he bumps(撞) his funny bone.7. If it weren’t for him, I would probably still ___________________ (addicted) weight lifting.8. The disease is spreading and all children under 5 are _________________ (risk).9. However, the visitor may not _________________ (accustomed) seeing public telephones outside along the street or road.10. Miss Tan is a chicken and she isn’t willing to _________________ (risk).II．语法填空阅读下面材料，在空白处填入适当内容（每空1个单词）或括号内单词的正确形式。
人教版高考英语选修6同步习题检测unit3 a healthy life课课练3
Unit 3 A healthy life第一节、单句改错1. It’s no use cry over spilt milk.2. It’s difficult give up smoking.3. It was disappointed that he refused my invitation.4. I think best that you should do more exercise.5. He found it difficult to accustom himself to get up early.6. She thought it no good worried about him.7. It is human activities that has caused this global warming.8. It is the burning of more and more fossil fuels that have resulted in this increase in carbon dioxide.9. It was a scientist was called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.10. I am sending you some advice I found on the Internet. They might help.第二节、单句语法填空1.It is high time that adolescents __________(get) rid of their bad habits.2.It is vital that you __________(have) a good command of English.3.He found ________ hard to fit in with his new classmates.4.______ occurred to me that they had once appeared in my dreams many years ago.\5.It is personality __________ decides who you truly are.6.I love _____ when it is clear and cool in autumn.7. I will/ would appreciate it you can change your plan a little bit to make it more workable．8. It remains (see) whether or not he will be elected as mayor in two years’ time.9. Her mother kept telling her not to go out at night, but didn't help.10. As a graduate, he doesn’t know it takes to start a business.11. He made it clear he was not interested in this subject.12. It will be five years we meet each other again.13. It was the first time that she (be) the Great wall.14. is known to all, the 2008 Olympic Games in Beijing were a success.15. When it comes to ______(live) as healthy and happy a life as his grandma, Jack has a lot to say.第一节、完形填空My mother was a responsible teacher and she retired. So I decided to give her one of my old computers to help her pass the time. She had a little bit of computer 41 , so I just set it up for her and let her 42 with it on her own.As time went on, I 43 the computer was hardly touched. She said she didn’t know 44 to use it. I decided to teach her. I sat and 45 everything and she seemed OK with what I said. Unfortunately, my sister called me at that moment 46 we talked on the phone for an hour. Then when I saw her again, she was sitting in front of the computer, looking quite 47 . The screen saver (屏幕保护) had appeared and she didn’t know how to 48 it off. She had tried 49 every key and it didn’t work. I told her, “Just 50 the mouse a little.” What I meant was that she just needed to move the mouse around to 51 the computer up. What she did was to 52 the mouse and start shaking it around in mid-air until the 53 went completely black. I couldn’t help laughing because of her funny 54 . The more I laughed the 55 she got.She thought that I was a (n) 56 teacher and she decided to figure the thing out herself. Well, at least I helped her overcome her 57 of breaking something and encouraged her to 58 a little.About a week later, I found a home-made 59 card with a mouse on the front making a funny face 60 to my door. It said, “Thanks for the computer lessons. Love, Mom.”41. A. theory B. knowledge C. technology D. history42. A. watch B. train C. play D. see43. A. found B. heard C. thought D. ignored44. A. why B. when C. how D. where45. A. learned B. described C. explained D. discussed46. A. and B. but C. because D. since47. A. amusing B. relaxed C. interesting D. discouraged48. A. get B. break C. cut D. turn49. A. hitting B. feeling C. changing D. removing50. A. hang B. shake C. rub D. push51. A. clean B. wake C. bring D. take52. A. put up B. cut off C. pick up D. put away53. A. screen B. curtain C. cover D. window54. A. gesture B. movement C. Expression D. action55. A. ruder B. happier C. angrier D. better56. A. impatient B. humorous C. careful D. helpful57. A. sadness B. pressure C. fear D. depression58. A. reply B. observe C. answer D. experiment59. A. inviting B. greeting C. shopping D. birthday60. A. appeared B. stuck C. combined D. printed第二节、阅读理解JOHANNESBURG—They say cats have nine lives. Now a Chinese toad(蟾蜍) has joined that club of clever survivors.South Africans are shocked at the endurance of a toad that got trapped in a cargo shipment from China to Cape Town, after jumping into a porcelain(瓷器) candlestick（烛台）that was made there. South African officials reportedly planned to put down the creature, fearing it would cause harm as an invasive species if it were let go in the wild.But the toad got a last-minute pardon. Mango Airlines, a South African airline, transported the toadon Friday to Johannesburg for delivery to an animal shelter, after officials decided to find a way to let the toad live. The two-hour fight was a breeze compared to the trip from China, a long way of many weeks and thousands of kilometers across the Indian Ocean.Airline spokesman Hein Kaiser said the toad got “first-class treatment”, sitting in a transparent plastic container with escort Brett Glasby, an animal welfare inspector. There was even a ceremony, in which the toad’s boarding pass was handed to Glasby.“He was the star of the show on the flight,” Kaiser said of the amphibious(两栖的) passenger. “I think every passenger stopped to have a look.”On landing in Johannesburg, the toad was brought out of its container for a celebrity-style photo shoot. Observers said the brown toad seemed like a cool customer. It belongs to the Asian Toad species, which breeds during the monsoon(季风) season. It is believed to have survived the trip from China by hardening its skin to prevent it from drying out, and also by slowing its breathing and heart rate—methods that help the species survive in times of drought.“We’ve had snakes in imported timber and scorpions(蝎子) in fruit. We were called because the toad was right inside the candlestick, and we had to break it to get it out” Glasby, the inspector, told The Star, a South African newspaper.29. If the toad is released into the wild, _________.A. it will make the locals feel shockedB. it might harm the native speciesC. it will lose its life in the wildD. it might flee into another country30. The toad was able to arrive in South Africa alive_________.A. because it escaped all attacks and huntsB. because it used to stop its breath in winterC. because it formed hard skin to protect itselfD. because it was lucky to be given a chance31. It can be inferred from the passage that_________.A. sometimes animal are transported accidentallyB. no one has seen such a big toad in AfricaC. a candlestick is the best place for a toadD. droughts make toads live longer。
人教版高中英语选修六Unit 3《a healthy life》第三学时同步检测
英语·选修6（人教版)第三学时Using LanguageReading，listening and speaking跟踪训练一、单词拼写1.________（不合法的)hunting is threatening the survival of the species、答案：Illegal2.She liked to dance but felt ________（局促不安的）if someone was watching her、答案:embarrassed3.It is quite beyond my ________(理解）.答案:comprehension4。
They accused him of having a________（偏见)against his women employees、答案:prejudice5。
I can’t make that decision for you，you will have to use your ________（判断)。
答案：judgement二、完成下列句子1.Emergency line operators must always ______________（保持冷静)and make sure that they get all the information they need to send help、答案：stay calm2。
______________(不可能）that I should accept such an offeras that、答案：It isn't likely3。
The disease is spreading，and all children under five ____________________（在危险之中）.答案：are at risk4.__________________(没有足够的证据)to prove him guilty of the crime、答案:There is not enough evidence5。
人教版高中英语选修六Unit3AhealthylifeUsingLanguage同步练测
madeofjingetieji 高中英语学习资料Unit 3 A healthy lifeSection C Using Language题组ⅠⅠ .填空1.Fine-line pens may compensate for bad handwriting,but fine, delicate lines do notcommand attention next to printed text, as,, a signature on a printed letter.A. at mostB. for exampleC. in briefD. on purpose2. He can speak three languages very well,English, French and German.A. namelyB. such asC. for exampleD. for instance3. He is a local government administrator,,he is a civil servant.A. such asB. for exampleC. that isD. it is4.Make sure you ’ve got the passports and ticketsand before you leave.A. somethingB. anythingC. everythingD. nothing5.The of certain test species after thedestruction of Columbia spaceship has aroused scientists’interest.A. surveyB. surroundingsC. survivalD. surface6.Clearness of is more important thanbeauty of language.A. statementB. movementC. improvementD. judgement7.He is full of racial.A. preferenceB. prejudiceC. interestD. prediction8.She was glad that he had good in thechoice of friends.A. justiceB. conclusionC. intentionD. judgement9.I was totally, and my face went red.A. embarrassedB. annoyedC. unsatisfiedD. excited10. The shy girl felt and uncomfortablewhen she could not answer her teacher ’s questions.A. amazedB. awkwardC. curiousD. amused11. John,, is a man who has overcome hisphysical disabilities.A. such asB. or ratherC. for exampleD. in a word12. — Did you lock the front door?— I think so, but I ’d better.A. be sureB. make sureC. be certainD. make out13. I have three good friends,Tom, Johnand Jack.A. namelyB. in other wordsC. in a wordD. that is14. The court has still to pass on this case.A. justiceB. judgementC. decisionD. assignment15.There ’slittle chance that mankindwould a nuclear war.A. remainB. stayC. surviveD. stand16. It was really a very situation, but hehandled it successfully.A. encouragingB. embarrassingC. excitingD. hearteningⅡ . 完成句子1. Some western countries（⋯⋯有偏）China.（ prejudice ）2. Politicians must（拥有优异的判断力）on politics. （ judgement ）3. Before I speak, I’d like to（就⋯⋯作述/ 明） my design for the project. （ statement ）4. It was the soldier5. Many safe measures have been taken at the scenicresort（冒着生命危险营救那位老妇人）from the big fire. （ risk）（为了保证游人的安全）.（ make）答案与剖析Ⅰ. 1. B A 项表示“至多” ；C 项表示“简言之，一言以蔽之”；D 项表示“故意”，都与所给语境不符。
高中英语(人教版,选修6)同步检测：unit 3 a healthy life 第三单元过关检测卷 word版含解析
英语·选修6(人教版)第三单元过关检测卷A卷基础知识检测一、用所给单词的适当形式完成下列句子1．Long-term ________ situations can produce a lasting，low-level ________ that's hard on people.(stress)答案：stressful；stress2．His experience in the Vietnam War caused him much ________ suffering.In fact，more than half of the soldiers were seriously ________ ill because of the war.(mental)答案：mental；mentally3．An ________ cooker can cook your rice ________.(automation)答案：automatic；automatically4．Nowadays lots of children are ________ to computer games，which is incredibly ________ as powerful as heroin.(addict)答案：addicted；addictive5．We fully ________ people's anxieties，exactly speaking，it is not beyond our ________ at all.(comprehend)答案：comprehend；comprehension6．Y ou take my ________ away and you leave me ________.(breath)答案：breath；breathless二、翻译下列短语1．对……有瘾，入迷__________________答案：be addicted to2．习惯于__________________答案：get/be accustomed to3．对……作出决定__________________答案：decide on4．不顾，尽管__________________答案：in spite of/despite5．想要做__________________答案：feel like(doing)6．冒险__________________答案：take risks/a risk7．处于危险之中__________________答案：at risk8．陷入，染上(坏习惯) __________________ 答案：get into9．由于__________________答案：due to10．对……感到羞愧__________________答案：be ashamed of三、选用上述短语完成下列句子1．I think my long and active life must be ________ the healthy life I live.答案：due to2．Many middle school students begin to smoke and they ________ cigarettes easily.答案：are addicted to3．It is not easy for today's only-child to ________the new life without parents' company.答案：be/get/become accustomed to4．________ the heavy rain，we kept on playing football on the ground.答案：In spite of5．Do you ________ going for a swim this afternoon?答案：feel like6．A good pilot never ________ when he is flying in the sky.答案：takes risks7．Those kids are always ________ trouble.答案：getting into8．The student ________ his rude behavior to his teacher last night.答案：was ashamed of四、语法填空Typing the word “pizza” into your favorite search engine may seem harmless enough.But 1.________ you may not know is that with this simple act you're sending information to possibly hundreds of machines 2.________(locate)possibly thousands of miles from where you sit.Each machine that search meets on its journey uses energy.Because there are many people 3.________(search)at the same time all over the world that energy can really add up.Few people have 4.________ day without computers.Most of the computers that people use are connected 5.________ the Internet.And it's easy to type，click and search 6.________ (get) answers to even the silliest question.We enjoy this luxury so much that we can forget each search does in fact use energy.And that energy gives out the greenhouse gas carbon dioxide.“Every time you type something into Google,7.________ uses several machines to find those answers for you 8.________display them on your page.All of that requires power，”says Sudhanva Gurnmurthi，a computer science puters and electronics account for about 9 percent of home electricity use，9.________ is a lot less than what the big users，especially heat and air conditioning take up.But using your computer to search the Web has effects that reach 10.________(far) than your own home.语篇解读：每天全世界都有许多人同时在利用网络进行搜索，这会消耗许多能量。
高中英语 选修6 unit 3《a healthy life》单元同步测试(含答案解析)
23.Oneshouldnotmakeflatteryan_______partofone’sbehaviorinlife.
A.naturalB.normalC.automaticD.genuine
A.Thanksto;believedtoarriveB.Owingto;aboutarriving
C.Becauseof;supposedarrivingD.Dueto;duetoarrive
5.Forthebenefitofnonsmokers,theMayorstressedtheimportanceandurgencyto_______inpublicplaces.
His___34___wasthathecertainlycouldaffordtomissthis___35___andforUS$250youcouldbuy___36___educationallikeatelescope.“Atelescope?Tolookatthemoon?I’lllookatitwhenI’m97yearsoldandlivingina___37___home!Thisismyyouth!Iamsupposedtorunabout.”
Atospread;setupB.tobespread;putupC.spreading;foundD.beingspread;buildup
4.______thethickfoghangingaroundtheairport,hisplanewhichwas_______at11:30landedtwohourslate.
人教版英语选修6Unit3AHealthyLife同步练习及答案.doc
人教版英语选修6 Unit3 A Healthy Life同步练习及答案Unit Three A Healthy LifeI.根据下列句子意思用所给词的正确形式或所给汉语填空1.Although not seen in the new studies, rare cases of ________ （normal） behavior have been reported ・2.Its clear that __________ （扌青木申的）activity does not stop when we're asleep・3.Children with ________________ （青少年）parents often fall a victim to abuse and neglect.4.It is known to us that there is a ______ （禁令）on smoking in petrol stations.5.The charity says it wants a _______________ （收回）of the comments.6.There was an _________ （局促不安白勺）moment as couples decided whether to stand next to their partners.7.There is widespread _________________ （偏见）against workers over 45 years old.8.The data shows that only 13 percent of consultants are _______ （女性）.9・If cancers are spotted early there's a high chance of __________ （survive）.10.How can you fully believe his subjective _____________ （judge）?11.He and his wife both strongly support ____________ （堕胎）rights.12・ He has been charged with membership of an __________ （非法的）organization.13.What bothers me is that the problem is above my _____________________ （理解力）.14.My suggestion is that you should ________ （辞去）your job・15.Tina was _______________ （怀孕）with her first daughter, which delighted her very much.16.He showed great courage by admitting that he is an ____________ （酗酒者）.17・ It was obvious that he was having a really _________ （困难的）time at work.18.All of the _____________ （自动白勺）body functions, even breathing, are affected.19.Parents worry about the ________ （影。
人教版高考英语选修6同步习题检测unit3 a healthy life课课练1
Unit 3 A healthy life第一节：词汇填空1. In some countries advertising (alcohol) drinks or tobacco is banned altogether.2. Cindy has a difficult life and (abuse) by her stepmother.3. He __________(stress) the importance of kindness, duty and order in society last night.4. She (ban) athletics for two years after falling a drug test.5. She (due) complete her study and graduate later this year.6. She kicked her three-pack-a-day cigarette habit, and overcame her_________ (addict) to alcohol.7. ---They are quiet, aren’t they? ---Yes. They are accustomed______________(talk) at meals.8. I made the choice ___________(withdraw) from college to care for her.9. It is ___________(legal) to drive a car without a driver’s license.10. I believe that this magazine will surely __________(strength) our ties.11. Exporting is necessary for our economic _________(survive).12. It can be ___________(embarrass) for children to tell complete strangers about such incidents.13. They thought his behavior was (normal) and suggested that he should be sent to hospital.14. He has a completely __________ (mentally) block when it comes to physics.15. His behavior was completely beyond ________________(comprehend).第二节：完形填空Everyone who has faced disappointment or loss knows that it’s not always easy to accept what life brings. From early childhood we experience situations in life that seem 36 or that don’t make sense to us, from an unequal distribution of toys to all kinds of bad things happening to 37 people. When we find ourselves faced with the __38 of life’s apparent unfairness, it’s often hard to let go and accept things as they are.The 39 part of non-acceptance of others, of those aspects of ourselves that we don’t 40 or of situations we face in life that seem greatly unfair is that we stay stuck, and we stay stressed.Paradoxically (很矛盾地), 41 to accept those things in life that are unacceptable is often the most 42 step in releasing ourselves from our negative emotions.__43 accepting those bad things in life is often easier said than done, it’s much easier done when you know where to 44 , and you have a plan. Each of these 45 can help you to more easily practice acceptance. Used ___46 , it becomes easier still.You can 47 yourself with some techniques. One of the most 48 ways is to actively focus on everything we have to appreciate. We now know that appreciation is a key component to happiness and inner 49 , so this is an important tool for acceptance and for overall life 50 . Often when we view things from a different perspective, we can 51 differently about them, and this 52 in feeling can make acceptance come much easier. That act of 53 things differently can help us to see the positive in what looks like the negative, and can help us to see the hidden ___54 of a difficult situation. This act doesn’t 55 the situation, but it can help us to see the situation differently, which can be transformative.36. A. unfair B. unhelpful C. unnecessary D. unknown37. A. healthy B. good C. lucky D. rich38. A. complaint B. choice C. reality D. dilemma39. A. bare B. difficult C. lame D. blank40. A. like B. predict C. believe D. check41. A. continuing B. promising C. deserving D. learning42. A. optional B. important C. potential D. interesting43. A. Until B. Since C. While D. Once44. A. start B. rise C. appear D. belong45. A. duties B. versions C. facts D. tools46. A. again B. together C. hard D. ahead47. A. teach B. charge C. free D. associate48. A. negative B. aggressive C. alternative D. effective49. A. wisdom B. peace C. sympathy D. warmth50. A. consideration B. devotion C. satisfaction D. attraction51. A. worry B. care C. talk D. feel52. A. source B. shift C. dignity D. direction53. A. looking for B. looking at C. looking up D. looking after54. A. benefits B. threads C. clues D. systems55. A. describe B. exploit C. change D. access第三节: 阅读理解Interactive television advertising, which allows viewers to use their remote controls to click on advertisements, has been pushed for years. Nearly a decade ago it was predicted that viewers of “Friends”, a popular situation comedy, would soon be able to purchase a sweater like Jennifer Aniston’s with a few taps on their remote control. “It’s been the year of interactive television advertising for the last ten or twelve years,” says Colin Dixon of a digital-media consultancy.So the news that Cablevision, an American cable company, was rolling out interactive advertisements to all its customers on October 6th was greeted with some skepticism. During commercials, an overlay will appear at the bottom of the screen, urging viewers to press a button to request a free sample. Cablevision hopes to allow customers to buy things with their remote controls early next year.Television advertising could do with a boost. Spending fell by 10% in the first half of the year. The popularization of digital video recorders has caused advertisers to worry that their commercials will be skipped. Some are turning to the Internet, which is cheaper and offers concrete measurements like click-through rates(广告点阅率)—especially important at a time when marketing budgets are tight. With the launch of interactive advertising, “many of the dollars that went to the Internet will come back to the TV,” says David Kline of Cablevision. Or so the industry hopes.In theory, interactive advertising can engage viewers in a way that 30-second spots do not. Unilever recently ran an interactive campaign for its Axe deodorant(除臭剂)，which kept viewers engaged for more than three minutes on average.The amount spent on interactive advertising on television is still small. Magna, an advertising agency, calculates it will be worth about $138 million this year. That falls far short of the billions of dollars people once expected it to generate. But DirecTV, Comcast and Time Warner Cable have all invested in it. A new effort led by Canoe Ventures aims to make interactive advertising available across America later this year. BrightLine iTV, which designs and sells interactive ads, says interest has shot up: it expects its profits almost to triple this year. BSkyB, Britain’s biggest satellite-television service, already provides 9 million customers with interactive ads.Yet there are doubts whether people watching television, a “lean back”medium, welcome interaction. Click-through rates have been high so far(around 3-4%, compared with less than 0.3% online), but that may be a result of the novelty. Interactive ads and viewers might not go well together.61. What does Colin Dixon mean by saying “It’s been the year of interactive television advertising forthe last ten or twelve years”(Para.1)?A.Interactive television advertising will become popular in 10-12 years.B.Interactive television advertising has been under debate for the last decade or so.C.Interactive television advertising is successful when incorporated into situation comedies.D.Interactive television advertising has not achieved the anticipated results.62. What is the public’s response to Cablevision’s planned interactive TV advertising program?A.Pretty positive.B.Totally indifferent.C.Somewhat doubtful.D.Rather critical.63. What is the impact of the wide use of digital video recorders on TV advertising?A.It has made TV advertising easily accessible to viewers.B.It helps advertisers to measure the click-through rates.C.It has placed TV advertising at a great disadvantage.D.It enables viewers to check the sales items with ease.64. What do we learn about Unilever’s interactive campaign?A.It proves the advantage of TV advertising.B.It has done well in engaging the viewers.C.It helps attract investments in the company.D.it has boosted the TV advertising industry.65. How does the author view the current high click-through rates?A.They may be due to the novel way of advertising.B.They indicate the popularity of interactive advertising.C.They point to the growing curiosity of TV viewers.D.They indicate the future direction of media reform.w。
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Unit3 同步检测Ⅰ.阅读理解Let’s face it.No one drinks diet soda for the taste.People drink diet soda in the hope that it will help them lose weight or at least keep them from gaining it.Yet it seems to have exactly the opposite effect，according to a new study.Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn’t drink diet soda.“What we saw was that the more diet sodas a person drank，the more weight they were likely to gain，”said Sharon Fowler.The study was based on data from 474 participants in a large，ongoing research project，where the participants were followed for nearly 10 years.While the findings are surprising，they also offer some explanations.Nutrition expert，Melanie Rogers，who works with overweight patients in New York，has found that when patients are switched from regular to diet soda，they don’t lose weight at all.“We weren’t seeing weight loss necessarily，and that was confusing to us，”said Rogers.So why would diet soda cause weight gain? No one knows for sure yet，but it could be that people think they can eat more if they drink diet soda，and so overcompensate for the missing calories.A related study found some sweeteners (甜味剂) raised blood sugar levels in some mice.“Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky，”said Helen P．Hazuda，professor at the University of Texas’s school of medicine.“They may be free of calories，but not of consequences.”【文章大意】本文是一篇科普性文章。
有些人希望通过饮用苏打水来减肥或防止体重增加。
然而新的研究表明，饮用苏打水不但不能减肥反而会增加体重。
1．People drink diet soda to________．A．enjoy its tasteB．stay in fashionC．achieve weight lossD．gain more energy解析：选C。
细节理解题。
根据文章第一段第三句中的“will help them lose weight”可知，人们饮用苏打水的目的是减肥。
故选C。
2．The new study suggests that drinking diet soda ________．A．causes people to become heavierB．helps people to be healthierC．makes people much thinnerD．offers people more calories解析：选A。
细节理解题。
根据第一段最后一句“Yet it seems to have exactly the opposite effect，according to a new study.”可知，饮用苏打水不但不能减肥，反而会导致体重增加。
故选A。
3．We can learn from the passage that________．A．regular soda makes people lose more weightB．diet soda drinkers tend to eat more foodC．diet soda does help reduce caloriesD．most blood diseases come from diet soda解析：选B。
细节理解题。
根据文章倒数第二段中的“people think they can eat more if they drink diet soda”可知，人们认为饮用苏打水后可以吃得更多。
故选B。
4．The underlined word “They”in the last paragraph probably refers to________．A．sweetenersB．diet sodas and artificial sweetenersC．sodasD．diet soda drinkers and sweetener takers解析：选B。
代词指代题。
根据文章最后一段所讲述的内容，特别是“the promotion of diet sodas and artificial sweeteners may be risky”可知，They指代的是“diet sodas and artificial sweeteners”。
故选B。
Ⅱ.七选五补缺题Obtaining Fresh Water from IcebergsThe idea of getting fresh water from icebergs that are moved to populated areas or places was once treated as a joke.Recently，scientists have warned that the human race will outgrow its fresh water supply faster than it runs out of food.1.________Glaciers are a possible source of fresh water that has been overlooked until recently.2.________ It contains fresh water so much that it could sustain(维持) all the rivers of the world for 1，000 years.Huge glaciers that stretch over the shallow continental shelf give birth to icebergs throughout the year.3.________ However，they are formed entirely on land，breaking off when glaciers spread over the sea.As they drift away from the polar region，icebergs sometimes move mysteriously in a direction opposite to the wind.Because they melt more slowly than smaller pieces of ice，icebergs have been known to drift as far north as 35 degrees south of the equator(赤道)in the Atlantic Ocean.4.________ The difficulty exists such as its rapid melting in warmer climates.5.________A．Icebergs are not like sea ice，which is formed when the sea itself freezes.B．Now it is being considered quite serious by many nations.C．7，659 trillion metric tons of ice are floating on the sea every year.D．But the water they could provide would be far cheaper than that produced.E．To move them to dry parts of the world would not be too difficult.F．It is not a dream to get water from icebergs.G．Threequarters of the Earth’s fresh water supply is still tied up in glacial ice.答案：1～5BGAEDⅢ.完形填空Waiting for the airplane to take off，I was happy to get a seat by myself.Just then，a flight attendant__1__ me and asked，“Would you mind changing your seat？A couple would like to sit together.”The only other __2__ seat was next to a woman with both arms in casts(石膏)，a black andblue face，and a depressed emotion.“__3__ am I going t o sit there” was my immediatethought.__4__ then a deeper，quieter voice spoke，“Opportunity.”Finally I took my new seat and __5__ that Kathy had been in an auto collision，and she was on her way for __6__．When the snack of nuts and juice arrived，__7__ did not take me long to realize that Kathy would not be able to __8__ herself.I considered offering to feed her but __9__，as it seemed too close a service to offer to a stranger.But then I decided tha t Kathy’s need was more important than my __10__．I offered to help her eat，and although she too was uncomfortable about __11__ it，she did.The experience was __12__ and she and I __13__ close in a short period of time.By the end of the five-hour trip，my heart was fully __14__，and the time was __15__ better spent than if I had just sat by myself.I was very glad I had reached beyond my comfort zone to sit next to Kathy and feed her.Love sometimes __16__ beyond human borders and dissolves the fears __17__ keep us separate.When we stretch to serve another，we grow to live in a larger，more __18__ world.Help me move __19__ the small self so I can connect with the hearts of others.When I give __20__ to another，I feed my own soul.【文章大意】本文是一篇夹叙夹议文。