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课时作业(二十一)必修5Unit 1 Great scientists(限时：35分钟).单项填空1We all feel it is Jack as well as his wife that _ for their sons bad performance at school.Aare to blame Bis to be blamedCare to be blamed Dis to blame2The workers will go on strike if the demands they _ are turned down.Aput aside Bput throughCput forward Dput away32012辽宁卷 Rod loves _ clocks. However, he never manages to put them together again.Ataking apart Bgiving awayCmaking up Dturning off4Only after he had spent several nights working on the maths problem _to wonder whether the problem was wrongly set.Ahe began Bthat he beganChe did begin Ddid he begin5My brother is shy，so it is a great _ for him to sing in front of the judges and audience.Ahonour BbenefitCcharacteristic Dchallenge6Children _ to difficult situations are better at handling those _ tasks.Aexposing; challenging Bexposed; challengedCexposed; challenging Dexposing; challenged7Since the _ of the disease，90 patients have been confirmed to have the illness and another 35 suspected patients are still under examination.Aoutbreak BreactionCanalysis Dresponse8He must have been very unlucky_Ato be rejected Bto have been rejectedCbeing rejected Dhaving been rejected9_ good service, the restaurant offers different kinds of traditional Shandong Cuisine.AFar from BRegardless ofCInstead of DApart from10Do we have to wear our school uniforms tomorrow?I think so. We _ the comingofage ceremony in the afternoon.Awill be attending Bhave attendedCattend Dattended11Dont stop _ you meet with a word you dont understand while reading.Aat the time Beach timeCby the time Dsometimes12After talking with his father for about half an hour, he felt better and began to know how to _this kind of situation.Astrengthen BexploreChandle Darrange13Whats the central idea of the passage，Bob?Sorry，I cant make _ of it. Its beyond my ability.Ajudgement BunderstandingCidea Dsense14The man，suspected _having stolen the jewels of the shop，was missing last night，although he was watched over by the police.Aof Bfor Cabout Dwith15Honey, Id like to go to South Africa for the World Cup this weekend._You must help me with the decoration of the house.AForget it! BThats great!CWhy? DGo ahead.完形填空I wanted to be just like those big kids I saw wearing their medals and carrying their ribbons(绶带)So I_16_the crosscountry team at my school.However，I was very slow in the team.In races，I would finish almost_17_Id always have to_18_in the longer races.The_19_races and at least 100 people competing in it made me really_20_Every time I stopped，10 people would_21_me.But I still couldnt push myself to keep going，even though I_22_watching them go by me.After every race，Id go home and burst into tears.Then one of my friends joined the crosscountry team，too.She never got tired and didnt get cramp(抽筋)in her legs.I just didnt understand how that was_23_！ Id been running much longer than she had，but she could run_24_while I had to suffer.She even came 8th in a big race with over 200 people in it! My_25_was lower than ever and I wanted to quit badly.I didnt，_26_Even a whole month before a race，Id get so nervous that I felt like I might give up.Still，I_27_to quit.I still had that_28_appearing in my mind and I hung on to it.Finally，I realized the reason why the bigger races made me so nervous was that I was always worried that I wasnt_29_for them.I started to practice at home almost every day.I_30_a plan that had me running almost three kilometers every day，which helped me build up a steady_31_When the time came for the big race，all the practice really_32_I stopped only once and my pace was much better.I was_33_of myself for sticking with it even though it was really hard and Id even wanted to quit.I showed myself that I was_34_enough to keep going.That was what made me feel good about myself and gave me confidence.The next time Im faced with a tough_35_，I will know that I can take it up.None of this would ever have happened if I had quitted!16A.liked Badmired Csupported Djoined17A.best Bfirst Clast Dleast18A.stop Brest Cbreathe Dsuffer19A.exciting Btiring Cinteresting Ddisturbing20A.nervous Bfrightened Csad Dangry21A.help Bencourage Cleave Dpass22A.missed Bhated Cavoided Descaped23A.equal Breasonable Cfair Dtolerable24A.quickly BeasilyChappily Dhopefully25A.strength Bdemand Cgoal Dconfidence26A.yet Beither Cthough Dstill27A.refused Bdecided Cfailed Dwanted28A.lesson Bfaith Cfuture Dpicture29A.suitable Bactive Cready Dwell30A.took out Bmapped out Cfigured out Dlet out31A.pace Brace Cwill Dlevel32A.set off Bpaid off Cgot off Dtook off33A.sure Baware Cproud Dafraid34A.strong Bpatient Csteady Ddevoted35A.job Bsport Ccompetition Dchallenge.阅读理解A study now lends support to the idea that mealtime distractions(分散注意) can mask the clues that we really have eaten quite enough. Moreover, it finds, the caloric fallout of not paying attention to what were eating doesnt necessarily end when a meal is over.Rose Cooper from England, and her colleagues gathered 22 men and an equal number of women for an experiment. Each person dined alone, continuously receiving nine small shares of food items. These ranged from cheese twists and potato chips to carrots, cherry tomatoes and sandwiches or sausage rolls.Because the goal was to test the potential impacts of distraction on fullness, the researchers randomly assigned half of the participants to eat in front of a computerand to gain as many wins as possible at the “card” game. Everyone else was told to focus on the sensory qualities of their meal.According to their instructions, the participants ate all of the food given to them. Yet people who played a computer game during lunch found their meal less filling than the mindful eaters had. Game players also swallow down twice as many cookies, almost an hour later, when they were allowed all the dessert they wanted( in the name of a taste test)The British scientists present their findings in the February edition of The American Journal of Clinical Nutrition.The real question is why distracted eating should impact snacking.It appears, the scientists say, that memory plays some tricky role in how we register what we eat and the degree to which it satisfies.Interestingly, eight years ago, Britta Barkeling of Huddinge University in Stockholm and her colleagues reported somewhat related findings.Their 18 overweight subjects had no choice other than to get rid of everything but lunch, on one daybecause they were blindfolded. Compared to a day when they could view what they were dining on, these people consumed only three quarters as many calories. Yet even hours afterward, they reported being no less full than on the day they had been able to see their plates.Of course dining in the dark isnt practical. And sometimes what we eat doesnt really invite our absolute attention. But there is certainly a growing mountain of data indicating that mindless eating is a waste of resources, a risk to our waistlinesand a costly threat to health.36Rose Cooper and her colleagues did the experiment in order to _Ashow that all the people enjoy snacksBprove that playing computer games is harmful while diningCfind possible effects of distraction on fullnessDtest the impacts of eating snacks on different people37Which is the most effective way to concentrate on your food when dining?AViewing your food. BBlindfolding your eyes.CPlaying computer games. DEating by oneself.38The reason why distracted eating influences snacking may be that _Ayou eat less in that caseByou are cheated by your memoryCyou have consumed more caloriesDyou digest what youve eaten faster39We can conclude from the passage that _Adistracted eating may damage your healthBeating snacks will make you feel fullCBritta became famous because of the experimentDplaying is more important than what we eat.短文填词In Grade Eight I took physics. In one test I got only 36 percent of the answers 40.c_. I failed the next one, too. I started to think that maybe I 41._ not good at it. However, I was 42.l_ enough to have a teacher 43._ did not take my bad grades as a 44._ (判断) of my abilities, but simply as an indication that I should study harder. He pulled me aside and 45.t_ me that he knew I could do better. He 46.p_ me to retake the test, and I pulled my grade to an A. This is 47._ I discovered: just because a 48._ (科目)is difficult to learn, it does not 49.m_ you are not good at it.参考答案课时作业(二十一).1.D句意：我们都感觉是杰克的妻子还有他自己应该对他们儿子在学校的恶劣行为负责。宾语从句是强调句，强调主语，根据主谓一致原则可知，谓语动词应用单数。be to blame意为“应负责任”。2C考查动词短语辨析。句意：如果工人们提出的要求被拒绝的话，他们会继续罢工。put forward提出(主意、计划等)，符合语意。put aside把放在一边；put through接通电话；put away把收起来，均不符合语意。3A考查动词短语辨析。从put them together知道，Rod喜欢拆钟表，而take apart就是“拆开”的意思。句意：Rod喜欢拆钟表，然而他从未把钟表再安装起来。give away分发，捐赠，泄露；make up弥补，占据；turn off关闭。4D考查倒装句。当“only状语”放在句首时，主句要用部分倒装结构。5D句意：我弟弟很腼腆，因此在评委和观众面前唱歌对他来说是一个很大的挑战。A项“荣誉”；B项“利益，好处”；C项“特点，特征”；D项“挑战”。6C考查分词作定语的用法。exposeto意思是“让接触”。宾语children提前，所以用过去分词作定语，表被动；第二空后的tasks是表示物的名词，所以用challenging修饰，意思是“富有挑战性的”。7A句意：自从这种疾病暴发以来，已有90人被确认有这种疾病，另外还有35位疑似病人在身体检查当中。A项“(战争、疾病、火灾等突然)暴发”；B项“反应，回应”；C项“分析”；D项“回答，答复，反应，响应”。8B考查非谓语动词。带感情色彩的形容词后面要用动词不定式，故排除C和D两项，此外，must have been 是对过去发生事情的推测，也就是说reject早已发生，这里谈论的是它的结果，所以用不定式的完成式。9D考查介词短语。根据句意选D。apart from“除了之外”。far from远非；regardless of不管，不顾；instead of代替。句意：除了优质服务之外，这家酒店还提供各种各样的传统山东美食。10A考查动词的时态和语态。根据原文的tomorrow和in the afternoon明显可以了解动作发生在将来，所以排除B、C和D选项。11B句意：在阅读的时候，不要一遇到不懂的词就停下来。each time在此引导时间状语从句。12C考查动词辨析。strengthen 加强；explore 探索；arrange 安排。句意：和父亲谈了大约半个小时后，他感觉好多了，并知道该怎样处理这种情况了。handle处理，符合句意。13D考查名词辨析。句意：Bob，这篇文章的中心思想是什么？对不起，我不明白(这篇文章)。这超出我的能力范围了。make sense of明白，理解。14A考查固定搭配。suspect常用结构：suspect sb.of (doing)sth.怀疑某人(做)某事。句意：虽然在警方的监视之下，这个被怀疑偷了商店里珠宝的男子昨晚却失踪了。15A考查情景对话。句意：亲爱的，这个周末我想去看南非世界杯。算了吧！你得帮我装修房子。Forget it! 算了吧；Thats great！好极了；Why？为什么；Go ahead去吧。.作者羡慕大孩子戴着勋章和绶带的样子，于是她参加了学校的越野队。虽然很难，但她坚持了下来，并通过努力锻炼取得了很大进步。文章告诉我们这样一个道理：遇到困难和挑战时，要勇敢面对，不放弃。16D作者也想像她见到的大孩子那样戴着勋章和绶带，所以她加入了学校的越野队。第三段中的“Then one of my friends joined the crosscountry team，too.”是线索提示。17C根据上文“I was very slow in the team.”可知，作者在比赛中几乎总是最后一个完成，故选C。18A根据下文“Every time I stopped”可知，作者在长跑比赛中总是不得不停下来，故选A。19B根据上文“作者在长跑比赛中总是不得不停下来”可知，这些比赛是很累人的，再结合下文作者与她朋友的对比“She never got tired and didnt get cramp(抽筋)in her legs.”可知，应选B。20A这些令人疲惫的比赛以及至少一百人参加比赛的确使作者很紧张。故A项正确。下文“Even a whole month before a race，Id get so nervous that I felt like I might give up.”是线索提示。21D每次作者停下来，就会有10个人超过她。22B虽然作者讨厌看着他们超过自己，但她仍然无法使自己继续下去。23C作者的朋友从不感到累，腿也不抽筋，且由该空下一句可知，作者无法理解为何如此不公平。equal“相等的，平等的”；reasonable“合情理的”；fair“公平的”；tolerable“可容忍的”。故C项正确。24B她跑得很轻松而作者却觉得那是一种折磨。解题时注意while表对比。25D作者从未感到如此没有自信，想放弃。confidence“自信”，符合语境。26C然而，作者没有放弃。though用作副词时，表示“然而”，常用在句末。27A比赛前一个月作者都紧张得想放弃。然而作者拒绝了放弃。28D此处指戴着勋章和绶带的大孩子的那个画面仍然在作者的脑海里。29C最终作者意识到，自己面对大赛紧张的原因是她总是担心自己没有准备好。be ready for“准备好(做某事)”。30Btake out“取出”；map out“仔细策划，计划”；figure out“理解”；let out“发出，下课，散场”。此处指“制订计划”，故选B。31A作者每天锻炼以帮助自己逐渐形成稳定的步伐。根据下文“I stopped only once and my pace was much better.”可知，应选A。32B根据下文“I stopped only once and my pace was much better.”可知，作者所有的锻炼奏效了。set off“出发”；pay off“奏效，取得成功”；get off“离开”；take off“起飞，脱下”。故B项正确。33C虽然真的很难，作者甚至曾想放弃，但她坚持下来了，她为自己感到自豪。be proud of“为感到自豪”。34A作者通过坚持不懈的努力取得了很大进步，向自己表明自己足够坚强，能够继续下去。strong“坚强的；强大的”，符合语境。35D下次作者面临艰难的挑战的时候，她将会知道自己能应对它。challenge“挑战”，符合语境。.有研究表明，吃饭时分散注意力会导致吃得更多，从而影响身心健康。那事实是不是这样呢？让我们从文章中寻找答案。36C推理判断题。从第三段中的“Because the goal was to test the potential impacts of distraction on fullness ”可知，实验的目的在于找出注意力的分散对饮食饱胀感的影响，所以选C项。37B推理判断题。从文章倒数第二段的内容可知，吃饭集中精力的最好的方法是罩住眼睛，选B项。38B细节理解题。从文章倒数第三段的内容可知，吃零食时分散注意力会对吃零食产生影响的原因是：你会被你印象中自己吃了多少东西欺骗，故选B项。39A细节理解题。根据文章最后一句可知，吃饭时分散注意力最终会影响人们的健康，所以选A项。.40.correct41.was42.lucky43.who/that44judgement/judgment45.told46.persuaded/permitted47what48.subject49.mean- 7 -
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