1、Unit3 同步检测.阅读理解Lets 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
2、who drank two or more diet sodas a day had waist size increases that were six times greater than those who didnt 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
3、 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 die
4、t soda，they dont lose weight at all.“We werent 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 miss
5、ing 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 PHazuda，professor at the University of Texass school of medicine.“T
6、hey 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。1People drink diet soda to_Aenjoy its tasteBstay in fashionCachieve weight lossDgain 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。2The
7、new study suggests that drinking diet soda _Acauses people to become heavierBhelps people to be healthierCmakes people much thinnerDoffers 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。3We can lear
8、n from the passage that_Aregular soda makes people lose more weightBdiet soda drinkers tend to eat more foodCdiet soda does help reduce caloriesDmost 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。4The under
9、lined word “They”in the last paragraph probably refers to_AsweetenersBdiet sodas and artificial sweetenersCsodasDdiet 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
10、”。故选 B。.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 ar
11、e 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，th
12、ey 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 3
13、5 degrees south of the equator(赤道)in the Atlantic Ocean.4._ The difficulty exists such as its rapid melting in warmer climates.5._AIcebergs are not like sea ice，which is formed when the sea itself freezes.BNow it is being considered quite serious by many nations.C7，659 trillion metric tons of ice ar
14、e floating on the sea every year.DBut the water they could provide would be far cheaper than that produced.ETo move them to dry parts of the world would not be too difficult.FIt is not a dream to get water from icebergs.GThree quarters of the Earths fresh water supply is still tied up in glacial ice
15、.答案：15 BGAED.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 blackandblue face
16、，and a depressed emotion.“_3_ am I going to sit there” was my immediate thought._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
17、 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 that Kathys need was more important than my _10_I offered to help her eat，and although she too was uncomfortable about _11
18、_ it，she did.The experience was _12_ and she and I _13_ close in a short period of time.By the end of the fivehour 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.L
19、ove 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
20、夹议文。文章通过写作者在坐飞机时帮助双手不便的Kathy 的经历告诉我们：爱总会溢出人际的疆界，融化这种隔阂。伸出助人之手，我们的世界就会变得更加广阔，更加有意义。1A.touched BapproachedCdeserved Dproposed解析：选 B。句意：正在那时一个空乘人员向我走来touch 意为“接触，触动” ；approach 意为“走近，靠近” ；deserve 意为“值得，应得” ；propose 意为“建议，计划” 。根据下文“asked”一词可知，答案选 B。2A.available BaccessibleCacceptable Dcomfortable解析：选 A。a
21、vailable 意为“可得到的，可利用的” ；accessible 意为“易接近的，可进入的” ；acceptable 意为“可接受的” ；comfortable 意为“舒适的” 。句意：剩下的唯一可坐的座位是在一个双臂打着石膏的妇女旁边。四个选项中，只有 available 符合语境。故答案选 A。3A.Through no means BIn no caseCWith no manners DBy no way解析：选 B。句意：我决不坐在那儿。A 项搭配错误，故排除，如改为“By no means”则可选；in no case 意为“决不” ，位于句首句子要用倒装；with no ma
22、nners 意为“没有礼貌” ；D 项搭配错误，故排除。故答案选 B。4A.So BOtherwiseCBut DAnd解析：选 C。根据下文“Finally I took my new seat and.”可知，作者一开始不想坐过去，后来还是说服自己坐了过去，所以此处用 but 表示前后思想的转折。故答案选C。5A.intended BdiscoveredCdefended Dadvocated解析：选 B。句意：我最终还是换到了那个新位置上，并且发现原来 Kathy 经历了一场车祸，她此行就是要去做治疗。intend 意为“打算” ；discover 意为“发现” ；defend意为“防护
23、，保卫” ；advocate 意为“提倡” 。根据语境可知，此处应用 discover。故答案选 B。6A.holidays BtreatmentCsightseeing Dinterview解析：选 B。根据上文“.had been in an auto collision”可知，Kathy 此行是要去做治疗。holiday 意为“假日” ；treatment 意为“治疗” ；sightseeing 意为“观光” ；interview 意为“采访” 。故答案选 B。7A.that BwhatCwhich Dit解析：选 D。it takes sb.some time to do sth.意为
24、“某人花费时间做某事” ，是固定句型，故答案选 D。8A.help BdressCeat Ddrink解析：选 A。句意：我很快意识到 Kathy 不能自行取用东西。由“nuts”和“juice”可知，eat 和 drink 都片面，故排除 C、D 两项；dress 意为“穿衣” ，与文意不符；help oneself 意为“自行取用” ，符合语境。故答案选 A。9A.hesitated BrejectedCinsisted Drefused解析：选 A。句意：我考虑主动喂给她吃，但是犹豫了，因为这对于一个陌生人来说，好像太过亲密了。hesitate 意为“犹豫，踌躇” ；reject 意为“
25、拒绝” ；insist 意为“坚持” ；refuse 意为“拒绝” 。根据下文“as it seemed too close a service to offer to a stranger”可知，只有 hesitate 符合语境。故答案选 A。10A.discomfort BguiltCconvenience Dsituation解析：选 A。根据语境可知，作者考虑到 Kathy 的需要远比自己的不适更重要。discomfort 意为“不适” ；guilt 意为“内疚，过失” ；convenience 意为“方便” ；situation 意为“情况” 。与上文“as it seemed to
26、o close a service to offer to a stranger”相呼应，故答案选 A。11A.attending BacceptingCconveying Dbehaving解析：选 B。根据“although”可知，尽管 Kathy 对于作者的帮助感到不太舒服，但她还是接受了。attend 意为“参加，出席” ；accept 意为“接受” ；convey 意为“传达” ；behave 意为“表现，举止” 。四个选项中，只有 accept 符合语境。故答案选 B。12A.desperate BpleasantCadequate Dawkward解析：选 B。句意：这段经历令人
27、很愉快，我们在很短的时间里就变得很亲近。desperate 意为“不顾一切的，令人绝望的” ；pleasant 意为“令人愉快的” ；adequate 意为“充足的，适当的” ；awkward 意为“尴尬的，笨拙的” 。与下文“she and Iclose in a short period of time”相呼应，故答案选 B。13A.maintained BgrewCstayed Dremained解析：选 B。根据上文“she too was uncomfortable”可知，我们由陌生变得亲近。maintain 意为“维持，继续” ；grow 意为“渐渐变得，发展” ；stay 意为“
28、坚持，保持” ；remain 意为“保持” 。四个选项中，只有 grow 强调变化的过程，符合语境。故答案选 B。14A.awake BaloneCalive Dasleep解析：选 C。句意：在这五个小时的旅程即将结束的时候，我觉得自己的内心彻底活了起来，我这五个小时过得比起自己一个人独坐肯定值多了。awake 意为“醒着的” ；alone 意为“独自的” ；alive 意为“活着的，有生气的” ；asleep 意为“熟睡的” 。与上文“The experience was.”相呼应，故答案选 C。15A.typically BproperlyCreasonably Ddefinitely解
29、析：选 D。typically 意为“有代表性地” ；properly 意为“适当地，恰当地” ；reasonably 意为“合理地” ；definitely 意为“明确地，肯定地” 。根据语境可知，definitely 符合语境。故答案选 D。16A.flows BsuitsCseizes Ddrags解析：选 A。flow 意为“淹没，流动” ；suit 意为“适合，使适应” ；seize 意为“抓住，夺取” ；drag 意为“拖曳” 。句意：恐怯让人们各自疏离，而爱总会溢出人际的疆界，融化这种隔阂。四个选项中，只有 flow 符合语境。故答案选 A。17A.what BthatCwhet
30、her Dwhen解析：选 B。分析句子结构可知，这是一个定语从句，the fears 是先行词，后面的定语从句缺少主语，所以此处用 that。故答案选 B。18A.answering BdemandingCrewarding Doffering解析：选 C。句意：当我们伸出助人之手去帮助别人的时候，我们居住的世界就会变得更广阔，更有意义和价值。answering 意为“应答的，回应的” ；demanding 意为“苛求的，要求高的” ；rewarding 意为“有益的，值得的，有报酬的” 。根据语境并结合选项可知，只有 rewarding 符合语境。故答案选 C。19A.toward Bac
31、rossCbeyond Dthrough解析：选 C。句意：帮助我超越渺小的自我，从而使我可以与他人的心相连。toward意为“朝，向” ；across 意为“穿过，横穿” ；beyond 意为“超过，越过” ；through 意为“通过” 。与上文“beyond human borders”相呼应，故 beyond 符合语境。故答案选 C。20A.sympathy BcareCvirtue Dlove解析：选 D。句意：在我给他人爱心之时，我亦哺育了自己的心灵。sympathy 意为“同情” ；care 意为“关心” ；virtue 意为“美德，优点” ；love 意为“爱” 。与上文“Lo
32、ve sometimes.”相呼应，故答案选 D。.语法填空Student A：Its so hard for me 1._ (learn) English.Why is it so easy for you?Student B：I dont know you were having problems.Maybe its easier for me 2._ I already speak two languages.But also I really work at it.Student A：Well，I always do my homework and go to classes.What
33、 else 3._ you think would help? Student B：You might try to read newspapers.And I always talk to Americans when I get 4._ chance，5._ sometimes its hard.Student A：But，how do you meet Americans? I only know other foreign students.Student B：How about sitting next 6._ an American at lunch，or have you eve
34、r thought of 7._ (ask) someone over to your house for dinner? Student A：Those are good ideas.But Im a little shy 8._ (speak)English.Student B：You wont learn 9._ you try to speak.If I 10._ (be) you，I d talk to your English teacher.He might have some good ideas.1解析：考查非谓语动词。本句 it 作形式主语，后面的不定式是真正的主语。答案：
35、to learn2解析：考查状语从句。后句是前一句的原因。because 表示原因。答案：because3解析：考查助动词。本句为疑问句倒装语序，故用助动词 do。答案：do4解析：考查冠词。a chance 一次机会，冠词 a 表泛指。答案：a5解析：考查副词。though 表示让步，意为“尽管” ；句意为：尽管有时很难，当我得到机会时我总是和美国人交谈。答案：though6解析：考查介词。next to 表示“紧挨着” 。答案：to7解析：考查非谓语动词。动名词 asking 作介词 of 的宾语。答案：asking8解析：考查非谓语动词。形容词后面跟不定式作原因状语。答案：to spea
36、k9解析：考查连词。空两边为两个单句，故缺少连词。unless“除非” ，符合句意。答案：unless10解析：考查虚拟语气。此处 were 表示对现在事实相反的假设。答案：were.课文语法填空阅读下面课文缩写材料，在空白处填入适当的内容或括号内单词的正确形式(不多于 3个单词) 。Its easy for you to start smoking，but _1_you become addicted to it，you may find _2_ difficult for you to quit.Firstly，you may become _3_(physical) addicted t
37、o nicotine，one of the hundreds of harmful chemicals that consist in cigarettes.Secondly，you may develop the habit of smoking and finally become mentally addicted to it.You may believe that you will only feel good when you smoke and may find all kinds of negative emotions _4_ you when you stop smokin
38、g.Smoking may have all kinds of harmful effects on the health of both the smokers themselves and nonsmokers around them.It not only affects your physical _5_ (fit)，but also does harm _6_your heart and lungs and causes a variety of diseases.Being a smoker，the offensive smell and appearance of you may
39、 drive people around you away.So，its important _7_ one quit smoking and live a healthier life.To quit smoking，you should be wellprepared and make _8_list of all the benefits you may get after quitting.Developing some new habits like listening to music，reading novels or _9_ (do) housework may distract your attention _10_ help you to forget your need for a cigarette.But if you really feel bad，you should consult a doctor or chemist to get some professional help.Remember，if you keep trying，you will eventually succeed.答案：1.once 2.it 3.physically 4.in 5.fitness 6.to 7that 8.a 9.doing 10.and
