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1、精选优质文档-倾情为你奉上2018年6月大学英语六级真题试卷及答案（二）目录Part I Writing (30 minutes)(请于正式开考后半小时内完成该部分，之后将进行听力考试)Directions: Forthispart,youareallowed30minutestowriteanessayon the importance of building trust between businesses and consumers.Youcanciteexamplestoillustrateyour views.youshouldwriteatleast150wordsbutnomor
2、ethan200words.Part II Listening Comprehension (30 minutes)Section ADirections: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must c
3、hoose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.注意：此部分试题请在答题卡1上作答。Questions 1 to 4 are based on the conversation you have just heard.1. A) She advocates animal protection. B) She sells a
4、special kind of coffee. C) She is going to start a cafe chain.D) She is the owner of a special cafe.2. A) They bear a lot of similarities. B) They are a profitable business sector.C) They cater to different customers.D) They help take care of customers pets.3. A) By giving them regular cleaning and
5、injections.B) By selecting breeds that are tame and peaceful.C) By placing them at a safe distance from customers.D) By briefing customers on how to get along with them.4. A) They want to learn about rabbits. B)They like to bring in their children. C) They love the animals in her cafe.D) They give h
6、er cafe favorite reviews.Questions 5 to 8 are based on the conversation you have just heard.5. A) It contains too many additives. B) It lacks the essential vitamins. C) It can cause obesity.D) It is mostly garbage.6. A) Its fancy design. B)TV commercials. C) Its taste and texture.D) Peer influence.7
7、. A) Investing heavily in the production of sweet foods.B) Marketing their products with ordinary ingredients.C) Trying to trick children into buying their products.D) Offering children more varieties to choose from.8. A) They hardly ate vegetables. B)They seldom had junk food.C) They favored chocol
8、ate-coated sweets.D) They liked the food advertised on TV.Section BDirections: In this section, you will hear two passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the b
9、est answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions9 to 12 are based on the passage you have just heard.9. A) Stretches of farmland. C) Tombs of ancient rulers.B)Typical Egyptian animal farms.
10、 D) Ruins left by devastating floods.10. A) It provides habitats for more primitive tribes.B) It is hardly associated with great civilizations.C) It has not yet been fully explored and exploited.D) It gathers water from many tropical ruin forests.11. A) It carries about one fifth of the worlds fresh
11、 water.B) It has numerous human settlements along its banks.C)It is second only to the Mississippi River in width.D)It is as long as the Nile and the Yangtze combined.Questions 12 to 15 are based on the passage you have just heard.12. A) Living a life in the fast lane leads to success.B)We are alway
12、s in a rush lo do various things.C)The search for tranquility has become a trend.D)All of us actually yearn for a slow and calm life.13. A)She had trouble balancing family and workB)She enjoyed the various social events.C)She was accustomed to tight schedules.D)She spent all her leisure time writing
13、 books.14. A) The possibility of ruining her family.B) Becoming aware of her declining health.C)The fatigue from living a fast-paced life.D)Reading a book about slowing down.15. A)She started to follow the cultural norms.B)She came to enjoy doing everyday tasks.C)She learned to use more polite expre
14、ssions.D)She stopped using to-do lists and calendars.Section CDirections: In this section, you will hear three recordings of lectures or talks followed by three or four questions. The recordings will be played only once. After you hear a question, you must choose the best answer from the four choice
15、s marked A), B)，C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 16 to 18 are based on the recording you have just heard.16. A) They will root out native species altogether.B) They contribute to a regions biodiversity.C) They pose a thre
16、at to the local ecosystem,D) They will crossbreed with native species.17. A) Their classifications are meaningful.B) Their interactions are hard to define.C) Their definitions are changeable.D) Their distinctions are artificial.18. A) Only a few of them cause problems to native species.B) They may t
17、urn out to benefit the local environment.C) Few of them can survive in their new habitats.D) Only 10 percent of them can be naturalized.Questions 19 to 21 are based on the recording you have just heard.19. A) Respect their traditional culture. B) Attend their business seminars. C) Research their spe
18、cific demands.D) Adopt the right business strategies.20. A) Showing them your palm.B) Giving them gifts of great value.C) Drinking alcohol on certain days of a month.D) Clicking your fingers loudly in their presence.21. A) They are very easy to satisfy.B) They have a strong sense of worth.C)They ten
19、d to be friendly and enthusiastic.D)They have a break from 2:00 to 5:30 p. mQuestions 22 to 25 are based on the recording you have just heard.22. A) He completely changed the company s culture.B) He collected paintings by world-famous artists.C) He took over the sales department of Readers Digest.D)
20、 He had the companys boardroom extensively renovated.23. A) It should be sold at a reasonable price.B) Its articles should be short and inspiring.C) It should be published in the worlds leading languages.D) Its articles should entertain blue- and pink-collar workers.24. A) He knew how to make the ma
21、gazine profitable.B) He served as a church minister for many years.C) He suffered many setbacks and misfortunes in his life.D) He treated the employees like members of his family.25. A) It carried many more advertisements.B) George Grune joined it as an ad salesman.C) Several hundred of its employee
22、s got fired.D) Its subscriptions increased considerably.Part Reading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the pass
23、age through carefully before making your choices, Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Did Sarah Josepha Hale write Ma
24、ry s Little Lamb，the eternal nursery rhyme (儿歌）about a girl named Mary with a stubborn lamb? This is still disputed, but its clear that the woman (26)_ for writing it was one of Americas most fascinating (27)_ .In honor of the poems publication on May 24, 1830, heres more about the (28)_ authors lif
25、e.Hale wasnt just a writer, she was also a (29)_ social advocate, and she was particularly (30)_with an ideal New England, which she associated with abundant Thanksgiving meals that she claimed had a deep moral influence. She began a nationwide (31)_to have a national holiday declared that would bri
26、ng families together while celebrating the (32)_ festivals. In 1863, after 17 years of advocacy including letters to five presidents, Hale got it. President Abraham Lincoln, during the Civil War, issued a (33)_ setting aside the last Thursday in November for the holiday.The true authorship of Mary s
27、 Little Lamb is disputed. According to the New England Historical Society, Hale wrote only part of the poem, but claimed authorship. Regardless of the author, it seems that the poem was (34)_ by a real event. When young Mary Sawyer was followed to school by a lamb in 1816，it caused some problems. A
28、bystander named John Roulstone wrote a poem about the event, then, at some point, Hale herself seems to have helped write it. However, if a 1916 piece by her great-niece is to be trusted, Hale claimed for the (35)_of her life that “some other people pretended that someone else wrote the poem”.注意：此部分
29、试题请在答题卡2上作答。A)campaignB)careerC)charactersD)featuresE)fierceF)inspiredG)latterH)obsessedI) proclamationJ)rectifiedK) reputedL) restM)supposedN) traditionalO)versatileSection BDirections: In this section, you are going to read a passage with ten statements attached to it. Each statement contains info
30、rmation given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2. Grow Plants Without WaterA Ever since h
31、umanity began to farm our own food，weve faced the unpredictable rain that is both friend and enemy. It comes and goes without much warning, and a field of lush (茂盛的）leafy greens one year can dry up and blow away the next. Food security and fortunes depend on sufficient rain, and nowhere more so than
32、 in Africa, where 96% of farmland depends on rain instead of the irrigation common in more developed places. It has consequences: South Africa s ongoing droughtthe worst in three decades一will cost at least a quarter of its corn crop this year.B Biologist Jill Farrant of the University of Cape Town i
33、n South Africa says that nature has plenty of answers for people who want to grow crops in places with unpredictable rainfall. She is hard at work finding a way to take traits from rare wild plants that adapt to extreme dry weather and use them in food crops. As the earths climate changes and rainfa
34、ll becomes even less predictable in some places, those answers will grow even more valuable. The type of farming Im aiming for is literally so that people can survive as its going to get more and more dry, Farrant says.C Extreme conditions produce extremely tough plants. In the rusty red deserts of
35、South Africa, steep- sided rocky hills called inselbergs rear up from the plains like the bones of the earth. The hills are remnants of an earlier geological era, scraped bare of most soil and exposed to the elements. Yet on these and similar formations in deserts around the world, a few fierce plan
36、ts have adapted to endure under ever-changing conditions.D Farrant calls them resurrection plants (复苏植物）.During months without water under a harsh sun, they wither, shrink and contract until they look like a pile of dead gray leaves. But rainfall can revive them in a matter of hours. Her time-lapse
37、(间歇性拍摄的）videos of the revivals look like someone playing a tape of the plants death in reverse.E The big difference between drought-tolerant plants and these tough plants: metabolism. Many different kinds of plants have developed tactics to weather dry spells. Some plants store reserves of water to
38、see them through a drought ； others send roots deep down to subsurface water supplies. But once these plants use up their stored reserve or tap out the underground supply, they cease growing and start to die. They may be able to handle a drought of some length, and many people use the term drought t
39、olerant to describe such plants, but they never actually stop needing to consume water, so Farrant prefers to call them drought resistant.F Resurrection plants, defined as those capable of recovering from holding less than 0.1 grams of water per gram of dry mass, are different. They lack water-stori
40、ng structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism. When they detect an extended dry period, they divert their metabolisms producing sugars and certain stress-associated proteins and other mat
41、erials in their tissues As the plant dries, these resources take on first the properties of honey, then rubber, and finally enter a glass-like state that is the most stable state that the plant can maintain，Farrant says That slows the plants metabolism and protects its dried-out tissues. The plants
42、also change shape shrinking to minimize the surface area through which their remaining water might evaporate They can recover from months and years without water, depending on the species.G What else can do this dry-out-and-revive trick? Seedsalmost all of them. At the start of her career, Farrant s
43、tudied recalcitrant seeds (顽拗性种子），such as avocados, coffee and lychee. While tasty, such seeds are delicatethey cannot bud and grow if they dry out (as you ma know if youve ever tried to grow a tree from an avocado pit). In the seed world, that makes them rare,because most seeds from flowering plant
44、s are quite robust. Most seeds can wait out the dry,unwelcoming seasons until conditions are right and they sprout (发芽）.Yet once they start growing,such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.H After completing her Ph. D. on seeds, Farran
45、t began investigating whether it might be possible to isolate the properties that make most seeds so resilient (迅速恢复活力的）and transfer them to other plant tissues. What Farrant and others have found over the past two decades is that there are many genes involved in resurrection plants response to dryn
46、ess. Many of them are the same that regulate how seeds become dryness-tolerant while still attached to their parent plants. Now they are trying to figure out what molecular signaling processes activate those seed-building genes in resurrection plantsand how to reproduce them in crops. Most genes are
47、 regulated by a master set of genes, Farrant says.Were looking at gene promoters and what would be their master switch. I Once Farrant and her colleagues feel they have a better sense of which switches to throw，they will have to find the best way to do so in useful crops. Im trying three methods of breeding, Farrant says: conventional, genetic modification and gene editing. She says she is aware that plenty of people do not want to eat genetically modified crops, but she is pu