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2018年6月大学英语六级考试真题(第2套）
Part I Writing(30minutes) Directions:For this part,you are allowed30minutes to write an essay commenting on the importance of building trust between teachers and students.You can cite examples to illustrate your views.You
should write at least150words but no more than200words.
Part II Listening Comprehension(30minutes) Section A
Directions:In this ction,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 choo the best answer from the four choices marked A),B),C)and D).
Then mark the corresponding letter on Answer Sheet1with a single line through the centre. Questions1to4are bad on the conversation you have just heard.
1.A).She advocates animal protection.B).She lls a 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 ctor.
C).They cater to different customers.D).They help take care of customers'pets.
王小波老婆3.A).By giving them regular cleaning and injections.
B).By lecting 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 her cafe favorite reviews. Questions5to8are bad on the conversation you have just heard.
5.A).It contains too many additives.B).It lacks the esntial vitamins.
C).It can cau obesity.D).It is mostly garbage.
6.A).Its fancy design.B).TV commercials.
C).Its taste and texture.D).Peer influence.
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 variable to choo from.
8.A).They hardly ate vegetables.B).They ldom had junk food.
C).They favored chocolate-coated sweets.D).They like the food advertid on TV.
Section B
Directions:In this ction,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 choo the best answer from the four choices marked A),B),C)and D).Then mark
the corresponding letter on Answer Sheet1with a single line through the centre.
Questions9to11are bad on the passage you have just heard.
9.A).Stretches of farmland.B).Typical Egyptian animal farms.
C).Tombs of ancient rulers.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 rain forests.
11.A).It carries about one fifth of the word'fresh water.
B).It has numerous human ttlements along its banks.
C).It is cond only to the Mississippi River in width.
D).It is as long as the Nile and the Yangtze combined.
Questions12to15are bad on the passage you have just heard.
12.A).Living a life in the fast lane leads to success.
B).We are always in a rush to do various things.
C).The arch 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 work.B).She enjoyed the various social events.
C).She was accustomed to tight schedules.D).She spent all her leisure time writing books.
14.A).The possibility of ruining her family.B).Becoming aware of her declining health.
成都好吃的C).The fatigue from living a fast-paced life.D).Reading a book about slowing down.
作壁上观是什么意思
15.A).She started to follow the cultural norms.B).She came to enjoy doing everyday tasks.
C).She learn to u more polite expressions.D).She stopped using to-do lists and calendars. Section C
Directions:In this ction,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 choo the best answer from the four choices marked A),B),C)and D).Then mark the corresponding letter on Answer Sheet1with a single line through the centre.
难忘的英文Questions16to18are bad on the recording you have just heard.
16.A).They will root out native species altogether.B).They contribute to a region's biodiversity.
C).They po a threat 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 cau problems to native
species.
B).They may turn to benefit the local environment
C).Few of them can survive in their new habitats.
D).Only10percent of them can be naturalized.
Questions19to21are bad on the recording you have just heard.
19.A).Respect their traditional culture.B).Attend their business minars.
C).Rearch their specific 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 prence.
21.A).They are very easy to satisfy.B).They have a strong n of worth.
C).They trend to friendly and enthusiastic.D).They have a break from2: Questions22to25are bad 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 Reader's Digest.
D).He had the company’s 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 world's leading languages.
D).Its articles should entertain blue-and pink-collar workers.
24.A).He knew how to make the magazine profitable.
B).He rved as a church minster for many years.
C).He suffered many tbacks and misfortunes in his life.
D).He treated the employees like members of his family.
25.A).It carried many more advertiments.B).George Grune joined it as an ad salesman.
C).Several hundred of its employees got fired.D).Its subscriptions incread considerably.
Part III Reading Comprehension(40minutes) Section A
Directions:In this ction,there is a passage with ten blanks.You are required to lect one word for each blank from a list of choices given in a word bank following the passage.Read the passage through carefully before making your choices.Each choice in the bank is identified by a letter.Plea mark the corresponding letter for each item on Answer Sheet2with a single line through the centre.You may not u any of the words in the bank more than once.
Questions26to35are bad on the following passage.
Did Sarah Jopha Hale write“Mary's Little Lamb,”the eternal nurry rhyme(儿歌)about a girl named Mary with a stubborn lamb?This is still dispute,but it’s clear that the woman26for writing it wa
s one of America's most fascinating27_.In honor of the poem's publication on May24，1830，here’s more about the 28author's life.
Hale wasn’t just a writer,she was also a29social advocate,and she was particularly30_with an ideal New England,which she associated with abundant Thanksgiving meals that she claimed had“a deep moral influence.”she began a nationwide31to have a national holiday declared that would bring families together while
celebrating the32festivals.In1863,after17years of advocacy including letters to five presidents，Hale got it.
tting aside the last Thursday in November for President Abraham Lincoln,during the Civil War,issued a33
the holiday.
The true authorship of“Mary’s Little Lamb”is disputed..According to New England Historical Society,Hale wrote only one part of the poem,but claimed authorship.Regardless of the author,it ems that the poem was 34by a real event.When young Mary Sawyer was followed to school by a l
amb in1816,it caud some problems.A bystander named John Roulstone wrote a poem about the event,then,at some point,Hale herlf ems
35of to have helped write it.However,if a1916piece by her great-niece is to be trusted,Hale claimed for the
her life that“Some other people pretended that someone el wrote the poem”.
A).campaign B).career
C).characters D).features
E).fierce F).inspired
G).latter H).obsd
I).proclamation J).rectified
K).reputed L).rest
M).suppod N).traditional
O).versatile
Section B
Directions:In this ction,you are going to read a passage with ten statements attached to it.Each statement contains information given in one of the paragraphs.Identify the paragraph from which the information is derived.You may choo a paragraph more than once.Each paragraph is marked with a letter.Answer the questions by marking the corresponding letter on Answer Sheet2.
Grow Plants Without Water
[A].Ever since humanity began to farm our own food,we've 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 curity and fortunes depend on sufficient rain,and nowhere more so than in Africa,where96%of farmland depends on rain instead of the irrigation common in more developed places.It has conquences:South Africa's ongoing drought—the worst in three decades—will cost at least a quarter of its com crop this year.
汤面做法[B].Biologist Jill Farrant of the University of Cape Town in 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 u them in food crops.As the earth's climate changes and rainfall becomes even less predictable in some places,tho answers will grow even more valuable."The type of farming I'm aiming for is literally so that people can survive as it's going to get more and more dry,"Farrant says.
[C].Extreme conditions produce extremely tough plants.In the rusty red derts of South Africa,steep-
sided rocky hills called inlbergs 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 expod to the elements.Yet on the and similar formations in derts around the world,a few fierce plants have adapted to endure under ever-changing conditions.保尔柯察金名言
[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-lap(间歇性拍摄的)videos of the revivals look like someone playing a tape of the plant's death in rever.
[E].The big difference between"drought-tolerant"plants and the tough plants:metabolism.Many
b站邀请码怎么用different kinds of plants have developed tactics to weather dry spells.Some plants store rerves of water to e them through a drought;others nd roots deep down to subsurface water supplies.But once the plants u up their stored rerve or tap out the underground supply,they cea growing and start to die.They may be able to handle a drought of some length,and many people u the term "drought tolerant"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 tho capable of recovering from holding less than0.1grams of water
per gram of dry mass,are different.They lack water-storing 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 materials in their tissues.As the plant dries, the 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 plant's metaboli
sm and protects its dried-out tissues.The plants 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 el can do this dry-out-and-revive trick?Seeds-almost all of them.At the start of her career,
alcitrant eds(执拗性种子),"such as avocados,coffee and lychee.While tasty, such eds are delicate--they cannot bud and grow if they dry out(as you may know if you've ever tried to grow a tree from an avocado pit).In the ed world,that makes them rare,becau most eds from flowering plants are quite robust.Most eds can wait out the dry,unwelcoming asons until conditions are right and they sprout(发芽).Yet once they start growing,such plants em not to retain the ability to hit the pau button on metabolism in their stems or leaves.
[H].After completing her eds,Farrant began investigating whether it might be possible to
isolate the properties that make most eds 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'respon to dryness.Many of them are the same that regulate how eds become dryness-tolerant while still attached to their parent plants.Now they are trying to f
持续英文igure out what molecular signaling process activate tho ed-building genes in resurrection plants—and how to reproduce them in crops."Most genes are regulated by a master t of genes,"Farrant says."We're looking at gene promoters and what would be their master switch."
[I].Once Farrant and her colleagues feel they have a better n of which switches to throw,they will
have to find the best way to do so in uful crops."I'm trying three methods of breeding,"Farrant says: conventional,genetic modification arid gene editing.She says she is aware that plenty of people do
not want to eat genetically modified crops,but she is pushing ahead with every available tool until one works.Farmers and consumers alike can choo whether or not to u whichever version
prevails:"I'm giving people an option."
[J].Farrant and others in the resurrection business got together last year to discuss the best species of resurrection plant to u as a lab model.Just like medical rearchers u rats to test ideas for human medical treatments,botanists u plants that are relatively easy to grow in a lab or greenhou tting to test their ideas for related species.The Queensland rock violet is one of the be
st studied resurrection plants so far,with a draft genome(基因图谱)published last year by a Chine team.
Also last year,Farrant and colleagues published a detailed molecular study of another candidate, Xerophyta viscosa,a tough-as-nail south African plant with lily-like flowers,and she says that a genome is on or both of the models will help rearchers test their ideas—so far mostly done in the lab—on test plots.
[K].Understanding the basic science first is key.There are good reasons why crop plants do not u dryness defens already.For instance,there's a high energy cost in switching from a regular metabolism to an almost-no-water metabolism.It will also be necessary to understand what sort of yield farmers might expect and to establish the plant's safety."The yield is never going to be high,"Farrant says,so the plants will be targeted not at Iowa farmers trying to squeeze more cash
