专题11+完形填空夹叙夹议文（冲关押题训练）-备战2018年高考英语大题冲关秘笈

专题11+完形填空夹叙夹议文（冲关押题训练）-备战2018年高考英语大题冲关秘笈

备战2018年高考英语大题冲关秘笈 专题11 冲关押题训练 Cloze 1‎ 话题 词数 难度 参考用时 正确率 ‎ 作者一辈子追求梦想的过程 ‎278 ‎ ‎★★★☆☆‎ ‎16分钟 ‎ I was born in New York City. My first seven years were spent in Manhattan, and then we moved to the Bronx. As a child with a strong 　1　for knowledge, I went to a public school and received a good 　2　education there.‎ At the end of my high school I decided to major in science and, in particular, 　3　. One of the 　4　factors may have been that my grandfather, whom I loved dearly, died of cancer when I was 15. I was 　5　motivated to do something that might eventually 　6　a cure for this terrible disease.‎ ‎ With great efforts and help from my parents, I 　7　graduate school at New York University in 1939. I was the only female in my graduate chemistry class, and 　8　my Master of Science degree in chemistry in 1941.‎ ‎ I was doing my research into 　9　with other scientists. When we began to see the results of our 　10　in the form of new drugs which filled real 　11　needs and benefited patients in very 　12　ways, our feeling of 　13　was immeasurable.‎ ‎ Over the 　14　, my work became both my vocation and avocation(业余爱好). 　15　, I became an enthusiastic photographer and 　16　. I have traveled fairly widely over the world, but there still remain many places for me to explore. 　17　major interest is music and I am an opera lover. I also 　18　concerts, ballet and theater.‎ ‎ In my 　19　career I was promoted frequently, and in 1967 I was appointed Head of the Department of Experimental Therapy, a position which I 　20　until I retired in 1983.‎ ‎1. A. feeling B. desire C. taste D. worry ‎2. A. further B. higher C. basic D. adult ‎3. A. politics B. physics C. math D. chemistry ‎4. A. deciding B. typical C. interesting D. available ‎5. A. primarily B. racially C. highly D. unwillingly ‎6. A. make up B. result from C. account for D. lead to ‎7. A. entered B. left C. searched D. built ‎8. A. dropped B. gained C. exchanged D. used ‎9. A. music B. photography C. history D. drugs ‎10. A. games B. accidents C. efforts D. behaviors ‎11. A. medical B. immediate C. luxurious D. extra ‎12. A. dangerous B. noticeable C. kind D. common ‎13. A. safety B. guilt C. tiredness D. reward ‎14. A. weekends B. months C. years D. holidays ‎15. A. Consequently B. However C. Otherwise D. Similarly ‎16. A. writer B. dancer C. traveler D. composer ‎17. A. Other B. Another C. The other D. Some ‎18. A. enjoy B. dislike C. direct D. plan ‎19. A. acting B. amateur C. teaching D. professional ‎20. A. held B. chose C. changed D. found ‎ 【语篇解读】文章描述了作者一辈子追求梦想的过程。因爷爷患癌症去世，作者立志学医，最后成为一名出色的医学专家，同时作者涉猎广泛，有很多的兴趣爱好。‎ ‎1. B 考查名词。根据后半句“I went to a public school and received a good… education there.”可知，作者渴 望获得知识，才会去学校努力学习。A. feeling感觉；感情；B. desire渴望；C. taste味道；D. worry 担心。故选B。 ‎ ‎2. C 考查形容词。根据前面的“As a child with a strong… for knowledge,”可知，当时作者还是一个孩子， 所以进入学校学习基础知识。A. further更进一步；B. higher更高的；C. basic基础的；D. adult成 年的。故选C。‎ ‎3. D 考查名词。根据“I was the only female in my graduate chemistry class.”可知，作者化学专业毕业，说 明作者决定在大学中学习科学，尤其是学习化学专业。A. politics政治；B. physics物理；C. math 数学；D. chemistry化学，医药化学。故选D。‎ ‎4. A 考查形容词。化学专业是医学类中的一个决定性专业，作者想学习治疗癌症的方法，所以必须学 习化学。A. deciding决定性的，无疑的；B. typical典型的；C. interesting有趣的；D. available可利 用的。故选A。‎ ‎5. C 考查副词。作者的爷爷在她15岁的时候死于癌症，这给她很大的动力去学习医学。所以使用highly 表示程度。A. primarily初学地；B. racially种族地；C. highly高度地；D. unwillingly不情愿地。故 选C。‎ ‎6. D 考查动词短语。作者要去做一些事情，这些事情可以带来对癌症的治愈。A. make up化妆，编造， 弥补，组成；B. result from由……造成；C. account for  解释，说明；D. lead to导致，带来。故 选D。‎ ‎7. A 考查动词。在父母亲的帮助下，在1939年作者进入了纽约研究所。A. entered进入；B. left离开； C. searched寻找；D. built建设。故选A。‎ ‎8. B 考查动词辨析。此处指作者经过努力获得了理科学位。A. dropped跌落，下降；B. gained获得，赢 得；C. exchanged交换；D. used使用。故选B。‎ ‎9. D 考查名词。根据第一段可知，作者决心学习医学，所以和其他的科学家在对药物进行研究。A. music 音乐；B. photography照片；C. history历史；D. drugs药物。故选D。‎ ‎11. A 考查形容词。这些药物以一种可以看见的方式满足了人们对药物的需要。A. medical医疗的，保健 的；B. immediate立即的；C. luxurious奢侈的；D. extra额外的。故选A。‎ ‎12. B 考查形容词。作者和其他科学家一起发明出很多药物，这些成就是人们可以看见的。A. dangerous 危险的；B. noticeable可以注意到的；C. kind善良的；D. common常见的。故选B。‎ ‎13. D 考查名词。当人们的努力得到回报的时候，那种有回报的感觉是难以衡量的。本句是指作者的努 力有了回报。A. safety安全；B. guilt内疚；C. tiredness疲惫；D. reward回报。故选D。‎ ‎14. C 考查名词。根据后面的“I became an enthusiastic photographer and… I have traveled fairly widely over the world, but there still remain many places for me to explore.”可知，“我”的工作成为了“我”的假期和 业余爱好。这不是在周末、月和假期中形成的，而是多年的习惯。“我”一直很努力，在假期里也从 事这药物研究。 A. weekends周末；B. months月份；C. years年；D. holidays假期。故选C。‎ ‎15. B 考查副词。A. consequently所以，因此；B. however然而；C. otherwise否则，要不然；D. similarly 类似地。根据后一句“I became an enthusiastic photographer”可知，作者成为摄影师，而之前的梦想 是找到癌症的治疗方法，但是却成为了摄影师。上下文之间存在转折关系，所以使用however表 示转折。故选B。‎ ‎16. C 考查名词。根据后面的“I have traveled fairly widely over the world”可知，作者很喜欢旅行，所以成 为了一名旅游家。A. writer作家；B. dancer舞蹈家；C. traveler旅行家；D. composer作曲家。故选C。‎ ‎17. B 考查形容词。根据前文的摄影师，和下文的music，opera lover，说明作者的爱好不止三个。A. Other 其他的；B. Another三个或三个以上的另一个；C. The other两个中的另一个；D. Some一些。故选B。‎ ‎18. A 考查动词。根据上一句可知，作者很喜欢音乐，所以喜欢听音乐会、芭蕾和喜剧等。这些都是和 音乐有关的行为。A. enjoy喜欢；B. dislike不喜欢；C. direct指挥；D. plan计划。故选A。‎ ‎20. A 考查动词。此处是指作者在这个位置上一直到退休。A. held举行，容纳，拥有；B. chose选择； C. changed改变；D. found发现。故选A。‎ Cloze 2‎ 话题 词数 难度 参考用时 正确率 ‎ 坚持对实现梦想非常重要 ‎ 322‎ ‎★★★☆☆‎ ‎18分钟 We talk about the persistence (坚持不懈) needed to make our dream come true today. Just think of Wilbur and Orville Wright. Their 　1　certainly didn’t happen overnight!‎ ‎ Wilbur was 12 years old and Orville 8 when their father brought home a 　2　. It was a rubber 　3　made in France. They 　4　it so much that they played with it until it broke. Immediately, they began 　5　copies. They were hooked on aviation (飞行器制造)! In 1900, as young men, having built their first glider (滑翔机), they decided to 　6　it out at Kitty Hawk on Kill Devil Hills. It 　7　consistent strong winds, and the somewhat cushioning effects of sand. That first flight was unsuccessful, 　8　it didn’t stop them. After several more tries, on December 17, 1903, with a much 　9　plane, they risked their lives to drive it in the wind. They 　10　flying the world’s first powered airplane. Beginning at 10:35 a.m. that day, Orville 　11　it 120 feet in about 12 seconds! At 12:00, Wilbur flew it 852 feet in 59 seconds! Johnny Moore, one of the five men who 　12　them that morning (in charge of dragging the plane across the sand for positioning), ran to the village of Kitty Hawk 　13　, “They’ve made it!” This was the 　14　of aviation! At this time, Wilbur was 36 and Orville 32. Roughly 24 years had passed 　15　their father gave them that toy!‎ ‎ If you have a 　16　, work at it. If it doesn’t turn out as 　17　, don’t give up! Try again! Who wants to live and say somewhere, “If only” or “What if?” 　18　what you want and ‎ accomplish it. Don’t ever give up! 　19　in the world can take the place of persistence. Talent will not; nothing is more 　20　than unsuccessful men with talent. Education will not; the world is full of educated derelicts (流浪汉). Persistence and determination alone are omnipotent (无所不能的).‎ ‎1. A. failure B. accident C. achievement D. change ‎2. A. toy B. tool C. book D. pet ‎3. A. car B. bicycle C. helicopter D. ship ‎4. A. desired B. missed C. needed D. liked ‎5. A. building B. selling C. buying D. drawing ‎6. A. put B. try C. pick D. carry ‎7. A. avoided B. prevented C. provided D. caught ‎8. A. but B. and C. so D. or ‎9. A. ordinary B. similar C. organized D. improved ‎10. A. took to B. kept to C. gave up D. ended up ‎11. A. flew B. placed C. dragged D. pulled ‎12. A. noticed B. met C. visited D. helped ‎13. A. laughing B. adding C. crying D. explaining ‎14. A. result B. birth C. target D. chance ‎15. A. since B. until C. though D. when ‎16. A. reason B. dream C. present D. task ‎17. A. allowed B. decided C. expected D. required ‎18. A. Worry about B. Return to C. Forget about D. Stick to ‎19. A. Something B. Nothing C. Anything D. Everything ‎20. A. common B. active C. painful D. exciting ‎ 【语篇解读】本文是一篇夹叙夹议文，用怀特兄弟试驾飞机的例子告诉我们坚持对实现梦想非常重要，世界上没有什么能够取代坚持。‎ ‎1. C 根据本空前的“We talk about the persistence (坚持不懈) needed to make our dream come true today. ” 可知，他们的成就（achievement）并非一蹴而就。‎ ‎2. A 根据本空后的“they played with it”可知，爸爸拿回家一个橡胶玩具（toy）。‎ ‎3. C 根据本空后的“They were hooked on aviation ”可知，这个玩具是法国制造的橡胶飞机（helicopter）。‎ ‎4. D 根据本空后的“it so much that they played with it until it broke.”可知，怀特兄弟很喜欢（liked）这个 玩具飞机。‎ ‎5. A 根据本空后的“In 1900, as young men, having built their first glider”可知，他们制造（building）飞机 模型。‎ ‎6. B 根据本空前的“In 1900, as young men, having built their first glider ”可知，他们要在 山上试飞(try out）他们制造的第一架滑翔机。‎ ‎7. C 上文说他们在山上试飞滑翔机是因为山上能提供（provided）持续的强风。‎ ‎8. A it didn’t stop them与That first flight was unsuccessful是转折关系。‎ ‎9. D 根据本空前的“ After several more tries”可知，飞机进行了改进（improved）。‎ ‎10. D 根据本空后的“flying the world’s first powered airplane”可知，他们最终（ended up）成功驾驶了世界 上第一架驱动力飞机。‎ ‎11. A 根据本空后的“it 120 feet in about 12 seconds!”可知，那天Orville在12秒钟之内飞行了（flew）120米。‎ ‎12. D 根据本空后的“them that morning (in charge of dragging the plane across the sand for positioning)”可 知，五个人帮助（helped）怀特兄弟试飞。‎ ‎13. C 根据本空后的“They’ve made it!”可知，Johnny Moore激动地大喊（crying）：“他们成功了”。‎ ‎14. B 上文说怀特兄弟试飞成功了，这次试飞就是飞行器的诞生（birth）。‎ ‎16. B 根据本空后的“work at it”可知，如果你有梦想（dream），就要向着梦想而努力。‎ ‎17. C 根据本空后的“don’t give up! Try again! ”可知，如果结果不像你所希望（expected）的那样也不要放弃。‎ ‎18. D 根据本空后的“what you want and accomplish it. Don’t ever give up!”可知，坚持（Stick to）自己的梦 想并努力去实现。‎ ‎19. B 根据本空后的“in the world can take the place of persistence. ”可知，世界上没有什么（Nothing）能够 代替坚持。‎ ‎20. A 根据本空后的“than unsuccessful men with talent.”可知，才能不能代替坚持，有才之人没有成功的例 子非常普遍（common）。‎ Cloze 3‎ 话题 词数 难度 参考用时 正确率 正确地设置期望 ‎298 ‎ ‎★★★☆☆‎ ‎17分钟 ‎ A few years ago I invited some friends to have a party in my house. During the 　1　, a glass of red wine was dropped on a very fancy, Persian carpet in the living room. Later, when I planned to have the carpet 　2　, experts came out. They 　3　that they could not only get out the 　4　, but also make every carpeted room look and smell nice.‎ ‎ After spending more than 200 dollars, my 　5　looked great. All of the carpets were cleaned, but there was still one slight 　6　— the stain was still there, and to say I was 　7　was actually an understatement. Committed to getting rid of the stain, I 　8　another expert. This ‎ was a real expert with great 　9　in this trade. When he arrived and saw the stain, he immediately explained to me how 　10　it would be to deal with the stain, and he wanted me to know that before he even unloaded his 　11　to start the job. My expectation at that point was low; however, I told him to put in his best 　12　.‎ ‎ In the first scenario(情景) I expected the stain to be 　13　. In the second I expected little or nothing. Those made me realize that in life the fine line between 　14　and disappointment can be our expectations. Disappointment will occur 　15　the expectation line drawn by ourselves is placed incorrectly. 　16　, good things will happen if you set your expectations 　17　. In the carpet cleaning scenario above, the second 　18　not only set my expectations appropriately by underpromising, but he also overdelivered by getting the stain out—a result that 　19　my expectations, making me very 　20　. So remember: set your expectations properly.‎ ‎1. A. show B. speech C. work D. get-together ‎2. A. rolled B. fixed C. cleaned D. designed ‎3. A. promised B. doubted C. warned D. complained ‎4. A. scar B. stain C. paint D. sweat ‎5. A. walls B. garden C. house D. furniture ‎6. A. doubt B. problem C. difference D. improvement ‎7. A. calm B. cheerful C. satisfied D. disappointed ‎8. A. called in B. paid off C. attended to D. broke with ‎9. A. interest B. character C. adventure D. reputation ‎10. A. attractive B. difficult C. common D. popular ‎11. A. product B. garbage C. equipment D. collection ‎12. A. effort B. symbol C. record D. benefit ‎13. A. saved B. covered C. displayed D. removed ‎14. A. dissatisfaction B. surprise C. happiness D. regret ‎15. A. so B. until C. if D. but ‎16. A. In conclusion B. To be honest C. On the whole D. On the contrary ‎17. A. abruptly B. incorrectly C. properly D. honestly ‎18. A. player B. advisor C. neighbor D. cleaner ‎19. A. added up B. ruled out C. went beyond D. turned down ‎20. A. glad B. sad C. angry D. upset ‎ 【语篇解读】本文是一篇夹叙夹议文，通过找两位清洁工清除地毯上的污迹的经历让作者认识到要正确地设置期望。‎ ‎1. D 根据本空前的“A few years ago I invited some friends to have a party in my house.”可知，此处是说在 聚会（get-together）期间。‎ ‎2. C 根据本空前的“a glass of red wine was dropped on a very fancy, Persian carpet in the living room.”可 知，我准备打扫（cleaned）洒上红酒的地毯。‎ ‎3. A 根据本空后的“they could not only get out”可知，下文是他们的承诺（promised）。‎ ‎4. B 上文说红酒洒在了地毯上，再结合下文中的stain可知，此处是说要除去污迹（stain）。‎ ‎6. B 根据本空后的“the stain was still there”可知，有一个小问题（problem）是仍然有污迹。‎ ‎7. D 上文说打扫过的地毯仍然有污迹，所以我感到失望（disappointed）。‎ ‎8. A 根据本空前的“Committed to getting rid of the stain,”可知，为了去除地毯上的污迹，我召来（called in） 另一个专业人士。‎ ‎9. D 根据本空前的“This was a real expert with great”可知，他的口碑（reputation）很好。‎ ‎10. B 根据本空后的“it would be to deal with the stain”可知，他对我说这些污迹很难（difficult）处理。‎ ‎11. C 根据本空前的“unloaded his”可知，他卸下装备（equipment）准备干活。‎ ‎12. A 根据本空前的“My expectation at that point was low; however, I told him to put in his best”可知，尽管 期望很低，但我仍然告诉他尽最大努力（effort）去除掉这些污迹。‎ ‎13. D 根据上文中的“Committed to getting rid of the stain”可知，我希望这些污迹被去除（removed）。‎ ‎14. C 根据本空后的“and disappointment can be our expectations”可知，这次经历让我认识到生活中快乐 （happiness）和失望的分界线。‎ ‎15. C 根据本空后的“the expectation line drawn by ourselves is placed incorrectly.”可知，如果（if）我们自 己画的期望线是错的，我们就会产生失望。‎ ‎16. D 由句意可知，此处说的是一种相反的（On the contrary）情况。‎ ‎17. C 此处与前面的“incorrectly”相对应，表示“正确地”。‎ ‎18. D 根据本空前的“ In the carpet cleaning scenario above”可知，此处是说第二个清洁工（cleaner）。‎ ‎19. C 根据本空前的“but he also overdelivered by getting the stain out”可知，污迹被清理掉超出（went beyond）我的意料。‎ ‎20. A 上文说污迹被清理掉了，我自然是很高兴（glad）。‎ Cloze 4‎ 话题 词数 难度 参考用时 正确率 ‎ 消极的人对他人和整个团队的影响 ‎302 ‎ ‎★★★☆☆‎ ‎18分钟 Michael and Jenna were both sales associates for a siding company. They were 　1　at the same time, but Michael had a little more 　2　in writing proposals. Once Jenna learned this, she came to him with almost every single proposal she wrote, asking for his 　3　and input. Michael was ‎ ‎　4　to help at first, but Jenna eventually took up so much of his time that he had trouble keeping up with his own work. 　5　he tried to get her to learn from the advice he’d given in the past, Jenna always seemed to have a 　6　why she needed his help.‎ While Michael was able to 　7　his deadlines and sell successfully, the drain Jenna created on Michael’s productivity prevented him from achieving the level of 　8　he was capable of — and that the company 　9　. Fortunately, their manager, Alice, was very 　10　her team and asked Jenna how often she went to Michael for help. Her answer wasn’t 　11　, so Alice talked to Michael and learned what had been 　12　. She told Michael that if Jenna needed help, he could send her to Alice’s office. At first Jenna was 　13　to ask Alice for help, but, under Alice’s guidance, she soon learned how to successfully 　14　her own proposal. Meanwhile, Michael was able to 　15　and increased his selling levels.‎ One of the biggest responsibilities of being a 　16　is ensuring that all of your employees positively 　17　to the company. You should look not only at every employee’s personal productivity, but also at how his or her productivity influences the 　18　of the entire team. That an employee doesn’t do his or her job well is an obvious problem, but that one 　19　the work of others is just as 　20　— but harder to spot because the drain on the company may be quiet.‎ ‎1. A. rented B. interviewed C. employed D. recorded ‎2. A. patience B. time C. difficulty D. experience ‎3. A. help B. comfort C. mercy D. money ‎4. A. hesitant B. happy C. confident D. brave ‎5. A. If B. Because C. While D. Whether ‎6. A. reason B. chance C. requirement D. habit ‎7. A. accept B. challenge C. make D. meet ‎8. A. success B. wealth C. fame D. power ‎9. A. owned B. needed C. awarded D. succeeded ‎10. A. in charge of B. in need of C. in tune with D. in terms of ‎11. A. right B. clear C. dependable D. serious ‎12. A. thinking of B. giving away C. working out D. going on ‎13. A. afraid B. reluctant C. arrogant D. active ‎14. A. analyze B. explain C. write D. perform ‎15. A. focus B. work C. rest D. plan ‎16. A. guide B. teacher C. doctor D. manager ‎17. A. read B. refer C. contribute D. turn ‎18. A. mood B. productivity C. goal D. plan ‎19. A. relies on B. takes over C. takes up D. holds back ‎20. A. difficult B. important C. dangerous D. natural ‎【语篇解读】本文是一篇夹叙夹议文。文章讲述了两个人同在一家公司工作，其中一个人总是向另外一个人求助，结果影响了团队的工作效率的故事。这蕴含一个人生哲理，即在一个团队中，一个消极的人往往会影响他人和整个团队的工作效率，而一个领导人应该确保每一个人都为团队作出自己最大的贡献。‎ ‎1.C考查语境逻辑。根据前面的＂Michael and Jenna were both sales associates for a siding company.＂可知，此处表示他们同时被雇用。故选C。rent＂租用，出租＂；interview＂面谈，访问＂；record＂记录，录制＂。‎ ‎ 2.D考查语境逻辑。结合后面的＂she came to him with almost every single proposal she wrote＂可知Jenna向Michael求教，这表明Michael比Jenna有经验。故选D。patience＂耐心，忍耐力＂；time＂时间，时候＂；difficulty ＂困难，难事＂。‎ ‎ 3.A考查上下文呼应。根据下文中的＂to help at first＂可知，此处表示Jenna向Michael寻求帮助。comfort＂舒适，安慰＂；mercy ＂仁慈，宽恕＂；money＂钱，收入＂。‎ ‎ 4.B考查语境逻辑。根据后面的＂to help at first， but Jenna eventually took up so much of his time＂可知Michael起初还是非常愿意帮忙的，但是后来Jenna占用了他大量的时间。故选B。hesitant＂犹豫的，踌躇的＂；confident＂有自信心的，有把握的＂；brave＂勇敢的，无畏的＂。‎ ‎ 5.C考查语境逻辑。根据后面的＂he tried to get her to learn from the advice he’d given in the past， Jenna always seemed...＂可知，此处存在让步关系，故选C。‎ ‎ 6.A考查语境逻辑。根据空格后面的＂why she needed his help＂可知，Jenna总能找到理由让Michael给予帮助。‎ ‎ 7.D考查固定搭配。从后面的＂his deadlines and sell successfully＂可知Michael能够如期完成任务，meet the deadline是固定结构，意为＂如期完成＂。 ‎ ‎8.A考查语境逻辑。根据前面的＂the drain Jenna created on Michael’s productivity prevented him from achieving the level＂可知，因为Jenna，Michael无法达到自己成功的水平。 ‎ ‎9.B考查上下文呼应。根据前面的＂the level of success＂可知，此处指公司需要的。‎ ‎10.C考查语境逻辑。结合语境和后面的＂asked Jenna how often she went to Michael for help＂可知，这个经理和员工们关系很融洽。in tune with＂与……协调，融洽＂，故选C。in charge of＂负责＂；in need of ‎＂需要＂；in terms of＂就……而言，在……方面＂。 ‎ ‎ 12.D考查上下文暗示。根据前面的＂so Alice talked to Michael＂可知，经理和Michael交谈，了解了到底发生了什么事情。故选D。think of＂想象到，想出，想起＂；give away＂分发，捐赠＂；work out＂计算，算出，解决＂。‎ ‎ 13.B考查上下文暗示。根据后面的＂to ask Alice for help， but， under Alice’s guidance＂可知，起初Jenna不愿意向经理寻求帮助。reluctant＂不情愿的，勉强的＂，故选B。afraid＂害怕，担心＂，arrogant ‎＂傲慢的，自大的＂；active＂忙碌的，积极的＂。‎ ‎ 14.C考查上下文呼应。根据第一段中的＂writing proposals＂可知，这里应填write。analyze＂分析＂，explain＂解释＂，perform＂表演＂。‎ ‎ 15.A考查语境逻辑。因为没有了Jenna的打扰，Michael可以集中注意力做自己的事情了，并提高了自己的　　销售水平。 ‎ ‎16.D考查上下文暗示。上文已经提到了＂Fortunately， their manager， Alice＂，由此可知此处表示一个经理的最大的责任之一就是确保每一个员工都积极地为公司做贡献。‎ ‎ 17.C考查语境逻辑。根据前面的＂ensuring that all of your employees positively＂可知此处表示确保每一员工都积极地为公司做贡献。 ‎ ‎18.B考查上下文呼应。根据第二段中的＂the drain Jenna created on Michael’s productivity prevented him from achieving＂可知此处应填productivity。‎ ‎ 20.C考查上下文暗示。与前面的＂an obvious problem＂相呼应，此处应选C。‎