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五、词汇分类题 |
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1.The century-old hostilities between the two tribeseventually terminated through the persistent efforts of the local government.（1997）
A.diminished B.shrunk C.vanished D.worsened
2.Herman’s success is due to his hard work and his abilityto formulate plans which will get work done efficiently.（1997）
A.fulfill B.approve C.conceive D.conduct
3.On hearing of the case some time later，Conan Doyle was convinced that the man was not guilty，and immediately went to work to ascertain the truth.（1997）
A.explore B.obtain C.verify D.search
4.The exhibition is designed to facilitate further cooperation between Chinese TV industry and overseas TV industries.（1998）
A.establish B.maximize C.guarantee D.promote
5.A new technological process may be employed to tap this abundant supply directly.（1999）
A.produce B.reserve C.exploit D.search
6.An international treaty signed several years ago bans trade in plants and animal of endangered species.（1999）
A.forbids B.eliminates C.promotes D.protects
7.Initial reports were that multiple waves of warplanes bombed central Baghdad， hitting oil refineries and the airport.（2000）
A.beating B.knocking C.hurting D.striking
8.Beijing Television-Station Transmitting Tower really looks magnificent at night when it’s illuminated .（2000）
A.decorated B.illustrated C.lit up D.studied carefully
9.When snow collects on top of a building during the winter，the weight sometimes weakens the construction and occasionally causes the roof to collapse.（2000）
A.melts B.accumulates C.selects D.scatters
10.Recent studies have posed the question as to whether there is a link between film violence and real violence.（2001）
A.supposed B.poised C.aroused D.raised
11.Floods have undermined the foundation of the ancient bridge.（2001）
A.weakened B.reached C.spoiled D.covered
12.A frequently cited example of the endangered species is the panda.（2001）
A.worried B.neglected C.reduced D.mentioned
13.Bob believes that theinvasion of the marketplaceinto the university is underminingfundamental academic values，and that we must act now to halt this decline.（2004）
A.lace B.plug C.cease D.digest
14.Their business flourished at its new location a year later owing to their joint efforts and hard work.（2005）
A.prevailed B.failed C.boomed D.shrank
15.Many women prefer to use cosmetics to enhance their beauty and make them look younger.（2006）
A.enforce B.magnify C.improve D.polish
16.The senator agreed that his support of the measure would jeopardize his chances for reelection.（2007）
A.benefit B.endanger C.hinder D.disturb
17.British scientists have found how to diagnose the disease，which causes loss of memory and personality change.（2008）
A.control B.determine C.prevent D.treat
18.Nobody can helpbut be fascinated by the world into which he is taken by the science fiction.（2009）
A.impressed B.amused C.puzzled D.attracted
19.Like flowers that have been waitingall winter to blossom ，tourists are eager to burst forth with their cameras.（2009）
A.survive B.breeze C.bloom D.revive
20.How is it possible for our human bodyto convert yesterday’s lunch into today’s muscle？（2010）
A.alter B.develop C.modify D.turn
21.Teachers and nurses who deal with children are obliged to report cases of suspected child abuse to authorities.（2011）
A.reminded B.expected C.compelled D.requested
22.Smoke particles and other air pollutants are often trapped in the atmosphere，thus forming dirty fog.（2011）
A.constrained B.caught C.concealed D.concentrated
23.When faced with doubts from some advisers on the attempted invasion，Kennedy ignored them.（1999）
A.failed to understand B.put up with
C.stood up for D.refused to consider
24.The dean can’t see you at the moment.He is addressing the first-year students in the lecture hall.（2002）
A.complaining to B.arguing with C.speaking to D.consulting with
25.He does nothingthat violates the interests of the collective.（2002）
A.runs for B.runs against C.runs over D.runs into
26.The sitting-room feels comfortable with the fireplace shedding warm and faintlight.（2003）
A.giving off B.calling off C.shaking off D.putting off
27.Talks on climate change resumed in the German city of Bonn on July 16 to combat global warming.（2004）
A.focus on B.settle down C.fight against D.sum up
28.Racing the clock every day is such as an exhausting effort that when I actually have a few free moments，I tend to collapse .（2007）
A.fall down B.fall ill C.fall out D.fall behind
29.Witnesses were allegedly tortured or subjected to pressure to fabricate evidence against him.（2008）
A.fix up B.take up C.pack up D.make up
动词短语
1.The colors in these artificial flowers are guaranteed not to come out .（2000）
A.disappear B.vanish C.fade D.blend
2.Born in 1932，he retired as a foreign correspondent for the Polish Press Agency in 1981，by which time his three books had started to come out .（2003）
A.be subscribed B.be published C.be popular D.be written
3.I couldn’t work out why anyone would invent something so boring.（2008）
A.draw up B.bring about C.put forward D.figure out
4.If you don’t slow down and take a break，you’ll be burned out very quickly.（2016）
A.distressed B.anxious C.exhausted D.upset
5.The police are trying to get back the stolen statue.（2001）
A.detain B.retrieve C.track D.detect
6.The promised wage increase is being held back while it is examined by the government to see if it is greater than the law allows.（2007）
A.dismissed B.delayed C.neglected D.rejected
7.Watching me pulling the calf awkwardly to the barn，the Irish milkmaid fought hard to hold back her laughter.（2012）
A.check B.keep C.stop D.retain
8.Many different parts make up an airplane：the engine（s），the wings，the tail，and so on.（2013）
A.compose B.decorate C.construct D.derive
9.Many of the local residents left homes to ward off the danger of flooding.（2002）
A.overcome B.enclose C.encounter D.avoid
10.Senator James Meeks had called off a boycott of Chicago Public Schools，organized to protest Illinois’ education funding system.（2009）
A.reclaimed B.proposed C.canceled D.indulged
11.The specially developed skin paint will wear off in 2-4 days，but can be removedinstantly with alcohol.（2017）
A.remain B.dry C.work D.disappear
12.Arriving anywhere with these possessions，he might just as easily put up for a month or a year for a single day.（1999）
A.arrange B.manage C.last D.stay
13.If minor disputes are left unsettled，tough ones will pile up sooner or later.（2005）
A.accumulate B.vanish C.linger D.emerge
14.His poor performance maybe attributed to the lack of motivation.（2014）
A.caused by B.focused on C.taken for D.viewed as
15.The pressure on her from her family caused her to resort to the drastic measures.（2005）
A.turn to B.keep to C.stick to D.lead to
16.The survey does not allow for the fact that some students are attending part-time.（2008）
A.explain B.deny C.consider D.recognize
17.Will Americans go for AT＆T’s plan of pushing the wireless services in the U.S.？（2008）
A.support B.adopt C.hinder D.attack
18.Senior citizens are advised to go in for some creative activities to keep themselves mentally young.（2003）
A search for B.invest in C.engage in D.work out
19.A great number of houses would have to be removed to make wayfor the new amusement park.（2012）
A.take the place of B.give space for C.build up D.work out
20.It is not clear whether theincreasein reports is stemmed from greater human activity or is simply the result of more surveys.（2001）
A.flows B.comes C.derives D.originates
21.The new government embarked upon a program of radical economic reform.（2003）
A.initiated B.produced C.adopted D.implemented
22.He noticed that Joan was studying him closely，but her expression gave away nothing of what she was thinking.（2007）
A.revealed B.disposed C.reminded D.distributed
23.The growth of part-time and flexible working pattern allows more women to take advantage of job opportunities.（2009）
A.catch up with B.make use of C.cast light on D.get rid of
24.There has been enough playing around so let’s get down to business .（2010）
A.make a deal B.begin our work
C.reach an agreement D.change our plan
25.Both Tom and his brother take after their father not only in appearance but also in character.（2012）
A.resemble B.assimilate C.follow D.reflect
1.The young man asked his parents not to worry because he was full of optimism about his career.（1997）
A.confidence B.motivation C.imagination D.resolution
2.You have to pay a（n） premium for express delivery.（1999）
A.extra charge B.extra price C.extra tip D.extra bonus
3.John’s mindless exterior concealed a warm and kindhearted nature.（2000）
A.appearance B.personality C.outlook D.temper
4.A good employer gives hints to his or her employees without interfering with their creativity.（2000）
A.freedom B.assistance C.clues D.funds
5.Now about half of the women who work in social welfare are part-time，as compared to 38% in the private sector.（2001）
A.guarantee B.farewell C.well-off D.well-being
6.Before you decide on a vocation ，it might be a good idea to consult a few good friends.（2001）
A.career B.holiday C.plan D.research
7.The State Council will lay down new rules that aim to make management compatible with internationally accepted conventions .（2002）
A.conferences B.conversations C.practices D.formations
8.The accepted criteria of adequate diet have been challenged by new discoveries in nutrition.（2003）
A.formations B.components C.standards D.ingredients
9.We shouldn’t treat children as peers or friends，but guide them in making their choices，even if it means with some discipline .（2003）
A.persuasion B.punishment C.rewards D.criticism
10.The State Department has issued a regulation abolishing the special privileges for government officials.（2008）
A.grants B.rights C.advantages D.interests
11.The legislative provision has a great impact on the operations of the department.（2004）
A.law B.passage C.revision D.clause
12.The Americans recognize that the UN can be the channel for greater diplomatic activity.（2009）
A.medium B.place C.resort D.tunnel
13.One’s awareness ，both conscious and unconscious，of what happened in the past has a strong influence on one’s behavior.（1997）
A.storage B.impression C.memory D.perception
14.As college teachers，they enjoy talking about their own specialties .（2000）
A.problems B.experiences C.interests D.fields
15.Your grade will be based in large part on the originality of your ideas.（2011）
A.creativity B.popularity C.feasibility D.flexibility
16.Her story shows how gentle stubbornness and an indifference to honors and fame can lead to great achievements.（2004）
A.persuasion B.determination C.devotion D.reservation
17.Courageous people think quickly and act without hesitation .（1999）
A.complaint B.consideration C.delay D.anxiety
18.The university offered several more courses for the purpose of furthering the career aspirations of its students.（2006）
A.ambitions B.achievements C.advantages D.advances
19.The weekend event will be centered around Wye College in Ashford，Kent，but the outing to the docks should be the highlight .（2008）
A.climax B.pleasure C.expectation D.surprise
20.It is difficult to comprehend，but everything you have ever seen，smelt，heard or felt is merely your brain’s interpretation of incoming stimuli.（2010）
A.explanation B.evaluation C.recognition D.interruption
21.Life is more important than the pressures and stress that we place on ourselves over work and other commitments .（2010）
A.appointments B.arrangements C.obligations D.devotions
22.In his closing remarks ，the chairman expressed his thanks to all those who had contributed to the success of the conference.（2012）
A.comments B.speech C.criticism D.lecture
23.The government has called for an independent inquiry into the incident.（2012）
A.requirement B.examination C.analysis D.investigation
1.The recent findings are also applicable to other areas of design engineering.（1997）
A.practical B.relevant C.convenient D.comparable
2.The editor considered the author’s analysis in his article to be penetrating .（2000）
A.extensive B.profound C.conclusive D.valuable
3.Personality in Americans is further complicated by successive waves of immigration from various countries.（2002）
A.uninterrupted B.successful C.forceful D.overwhelming
4.One U.S.dollar is comparable to 131 Japanese yen according to China Daily’ s finance news report yesterday.（2002）
A.compatible B.compact C.equal D.entitled
5.The cost of healthcare and health insurance remains the most urgent health problem facing the country today.（2006）
A.pressing B.important C.neglected D.complicated
6.Many students today display a disturbing willingness to choose institutions and careers on the basis of earning potential.（2010）
A.offensive B.depressive C.troublesome D.tiresome
7.The hurricane was incredibly devastating and left thousands homeless.（2012）
A.forceful B.mighty C.destructive D.dangerous
8.Economic factors aside，the imbalanced distribution of educational resources also affects fairness of education.（2012）
A.unjust B.impartial C.uneven D.improper
9.The very sight of the imposing buildings assured these tourists of the significant changes in this city.（2003）
A.instinctive B.impressive C.institutional D.imaginary
10. Presumably ，excessive consumption of fried foods has serious consequences as has been proved.（2003）
A.Theoretically B.Practically C.Incredibly D.Probably
11.The applications of genetic engineeringare abundant and choosing one appropriate for this case can be rather difficult.（2009）
A.plentiful B.sufficient C.adequate D.countable
12.Many observers believe that country will remain in a state of chaos if it fails to solve its chronic food shortage problem.（1998）
A.transient B.starving C.severe D.serial
13.Because of adverse weather conditions，the travelers stopped to camp.（2001）
A.local B.unfamiliar C.good D.unfavorable
14.As a result of sophisticated technologies，this device has several advantages over like products.（2002）
A.traditional B.intelligent C.industrious D.advanced
15.When taken in large quantities some drugs can cause permanent brain damage.（2002）
A.lasting B.serious C.terrible D.temporary
16.The nasty language of local officials makes them seem very ignorant and rude.（2003）
A.artificial B.indecent C.humorous D.lively
17.Silk，although it is considered a delicate fabric，is in fact very strong，but it is adversely affected by sunlight.（2003）
A.soft B.sheer C.fragile D.refined
18.Despite the dangers and difficulties in fighting with the terrorists，the soldiers were resolute .（2003）
A.defensive B.aggressive C.stubborn D.firm
19.Hague was elected as the Conservative Party leader partly because of his ambiguous views on Britain’s position in relation to its partners in the European Union.（2004）
A.ambitious B.obscure C.appalling D.indifferent
20.So instead we spent the whole afternoon hanging around in the gorgeous autumn sun.（2008）
A.golden B.beautiful C.warm D.shining
21.You can easily find out the benefits of flexible working for both you and your employer.（2008）
A.loose B.effective C.elastic D.resourceful
22.It is true that London is often sunless， damp and raw，though the occasional sunny days seem all the more attractive by contrast.（2009）
A.mild B.chilly C.cloudy D.moist
23.In the end，both attacks and defenses of the free market and conventional economics have immense philosophical implications.（2005）
A.traditional B.novel
C.capital-centered D.consumption-centered
24.Employees in chemical factories are entitled to receive extra pay for doing hazardous work.（2011）
A.poisonous B.difficult C.dangerous D.harmful
25.The salesman approached the house cautiously when he saw the vicious dog at the door.（1999）
A.carefully B.deliberately C.nervously D.bravely
26.The temperatures are somewhat lower than the average temperature in May this year.（2001）
A.rather B.very C.a little D.less
27.It is anticipated that this contract will substantially increase sales over the next three years.（2003）
A.apparently B.slightly C.considerably D.steadily
28.Television advertisements do more than merely reflect dominant ideologies.（2004）
A.exactly B.faithfully C.repeatedly D.simply
29.Safety officials have earnestly questioned whether the increased use of synthetic materials heightens the risk of fire.（2007）
A.cautiously B.severely C.accurately D.seriously
30.In the accident three men were trapped in a submerged vehicle，and their only hope was another man whose legs were broken.（2003）
A.wrecked B.burnt C.overturned D.sunk
1. Without question ，people’s lives in China have improved dramatically in the pasttwo decades.（2002）
A.Out of the question B.No doubt C.Naturally D.Obviously
2.I would recommend this inn highly on account of its wonderful location.（2004）
A.as a result of B.because of C.with regard to D.with a view to
3.The coach explained the regulations at length to make sure that none of his players would become violators.（2006）
A.at last B.at large C.in detail D.in short
4.We no longer keep up the close friendship of few years ago，though we still visit each other on occasion .（2006）
A.in good time B.up to date C.now and then D.once and for all
5.What lies in pieces around them represents， in effect ，a unique private exhibition open to a lucky few.（2008）
A.in short B.in particular C.in fact D.in turn
6.The 16 percent fare increase would bring Chicago fares in line with those of other big cities.（2009）
A.in agreement with B.in cooperation with
C.in connection with D.in association with
7.If you continue to indulgein computer games like this，your future will be at stake .（2010）
A.in danger B.without question
C.on guard D.at large
8.Romantic novels， as opposed to realistic ones，tend to present idealized versions of life，often with a happy ending.（2010）
A.in contrast to B.in regard to C.in terms of D.in light of
9.Curt Carlson，the wealthiest man in Minnesota，owned a hotel and travel company with sales reaching in the neighborhood of $ 9 billion.（2011）
A.precisely B.merely C.substantially D.approximately
动词
1-1.Computers will flourish because they enable us to accomplish tasks that could never before have been undertaken.（1997）
A.implement B.render C.assign D.complete
1-2.Many youngsters have heard their parents say “You’ll never amount to anything if you keep daydreaming that way！”（2006）
A.be equal to B.accomplish C.add up to D.pursue
2-1.If a cat comes too close to its nest，the mockingbird initiates a set of actions to protect its offspring.（1998）
A.hastens B.triggers C.devises D.releases
2-2.Should either of these situations occur，wrong control actions might be taken and a potential accident sequence initiated .（2001）
A.imported B.installed C.started D.interviewed
2-3.Last month the government initiated a public debate on the future direction of the sport policy.（2018）
A.transmitted B.followed C.promoted D.launched
3-1.At that time work was restricted to slaves and to those few poor citizens who couldn’t support themselves.（2002）
A.attributed B.limited C.connected D.devoted
3-2.For their own safety，household pets should be confined to their own yard.（2012）
A.tamed B.regained C.restricted D.contained
4-1.Nearly eleven thousand people have been arrested for defying the ban on street trading.（2003）
A.criticizing B.neglecting C.blaming D.disclosing
4-2.The news reports completely overlooked the more profound political implications of the events.（2011）
A.neglected B.foresaw C.explored D.assessed
5-1.The patient’s condition has deteriorated since he had a heart attack.（2002）
A.improved a little B.remained the same C.become worse D.changed a lot
5-2.The patient’s condition has deteriorated since last night.（2015）
A.improved B.returned C.worsened D.changed
6-1.I found this very profitable in diminishing the intensity of narrow-minded prejudice.（2002）
A.lessening B.reflecting C.removing D.increasing
6-2.As the fighting intensified，the chances of any peace deal diminished .（2018）
A.decreased B.changed C.disappeared D.expanded
7-1.Most people would agree that，although our age far surpasses all previous ages in knowledge，there has been no correlative increase in wisdom.（2010）
A.improves B.precedes C.imposes D.exceeds
7-2.Watching these kids grow brings me satisfaction that is difficult to surpass .（2016）
A.obtain B.exceed C.describe D.forget
词组
8-1.Readers are required to abide by the rules of the library and mind their manners.（2006）
A.observe B.memorize C.review D.compose
8-2.Readers are required to comply with the rules of the library and mind their manners.（2012）
A.evaluate B.memorize C.protect D.observe
8-3.My beard started to grow，and I unwillingly complied with the order to shave it off.（2018）
A.considered B.questioned C.supported D.observed
9-1.At last John Smith chose to stepdown as the company’s chief executive and return to his roots in software research.（2007）
A.resign B.remove C.retire D.replace
9-2.At last John Smith stepped down as the company’s CEO and returned to his roots in soft ware research.（2018）
A.retired B.resigned C.revived D.reacted
10-1.Whenever you need Tom，he is always there whether it be an ear or a helping hand，so you can always lean on him.（2011）
A.count on B.benefit from C.stand for D.stick to
11-1.There are some things in the class the teachers will not put upwith .（2003）
A.tolerate B.contribute C.resist D.prohibit
11-2.She was tired of his constant complainingand didn’t want to tolerate him anymore.（2017）
A.catch up with B.put up with C.come up with D.live up to
名词
12-1.The farm ministers scheduled an emergency meeting in Luxembourg in hopes of easing the worldwide “mad cow” panic .（1997）
A.crisis B.alarm C.hazard D.peril
12-2. Panic swept through the swimmers as they caught sight of a huge shark approaching menacingly.（1998）
A.Tension B.Excitement C.Fear D.Nervousness
13-1.Providingfirst-class service is one of the tactics the airline adopts to attract passengers.（2001）
A.methods B.attitudes C.thoughts D.solutions
13-2.Thus the most logical approach is to focus our analysis on the trade relations of Spain with other European countries.（2006）
A.reasoning B.conclusion C.position D.method
14-1.The leaders of the two countries are planning their summit meeting with a pledge to maintain and develop good ties.（1997）
A.strategy B.standpoint C.priority D.promise
14-2.The leaders of the two countries are planning their summit meeting with a pledge to maintain and develop good ties.（2006）
A.strategy B.standpoint C.promise D.priority
14-3.The newly elected president has pledged $ 13 million to the automobile industry for its survival.（2009）
A.prepared B.promised C.disposed D.delivered
15-1.He must not allow this unusual barrier to stop him from fighting against the enemy.（2001）
A.interior B.obstacle C.interruption D.interference
15-2.The tendency of the human body to reject foreign matter is the main obstacle to successful organ transplantation.（2011）
A.factor B.constituent C.barrier D.break
16-1.The fun of playing the game was a greater incentive than the prize.（1998）
A.motive B.initiative C.excitement D.entertainment
16-2.To absorb a younger work force，many companies offered retirement plans as incentives for older workers to retire and make way for the younger ones who earned lower salaries.（2005）
A.rewards B.opportunities C.motives D.stimuli
17-1.Nuclear power，with all its inherent problems，is still the only option to guarantee enough energy in the future.（2007）
A.solution B.policy C.choice D.reason
17-2.There are several different options for getting Internet access.（2015）
A.choices B.definitions C.channels D.reasons
18-1.Factors leading to the crisis included poor regulation，mismanagement and deception in the industry，and competition from other types of financial firms.（2000）
A.cheating B.pollution C.abuse D.depression
18-2.How is it possible that such widespread deception has come to take place right under our noses？（2017）
A.delay B.damage C.fraud D.shock
19-1.The book shifted her outlook from social to spiritual，for its theme was that before you change other people you have to change yourself.（2007）
A.viewpoint B.vocation C.prospect D.preference
19-2.The journal published a series of articles that reviewed the prospects for a new era of “genetic medicine”.（2018）
A.background B.exploration C.survey D.outlook
20-1.According to the minister，measures are being taken to introduce more diversity into the education system.（2018-11）
A.difference B.adversity C.unity D.variety
形容词、副词
21-1.People of diverse backgrounds now fly to distant places for pleasure，business or education.（1998）
A.different B.distinctive C.similar D.separate
22-1.Sometimes the messages are conveyed through deliberate ，conscious gestures；other times，our bodies talk without our even knowing.（1998）
A.definite B.intentional C.delicate D.interactive
22-2.We suspect there is a quite deliberate attempt to sabotage the elections and undermine the electoral commission.（2011）
A.conscious B.desperate C.clumsy D.intentional
22-3.It is not yet clear whether the deletion of data at the troubled bank was accidental or deliberate .（2017）
A.obvious B.intentional C.surprising D.foolish
22-4.Betty was offended because she felt that her friends had ignored her purposefully at the party.（2010）
A.desperately B.definitely C.deliberately D.decisively
23-1.Lighting levels are carefully controlled to fall within an acceptable level for optimal reading convenience.（1998）
A.ideal B.required C.optional D.standard
23-2.Conditions for the growth of this plant are optimum in early summer.（2014）
A.most acceptable B.most expressive C.most favorite D.most desirable
24-1.Hardly a week goes by without some advance in technology that would have seemed incredible 50 yeas ago.（1999）
A.hard to invent B.hard to understand C.hard to imagine D.hard to believe
24-2.The microscope enables scientists to distinguish an incredible number and variety of bacteria.（2007）
A.unavoidable B.unchangeable C.unbelievable D.unpredictable
25-1.Next semester，Susan must take three compulsory courses.（2001）
A.formal B.voluntary C.practical D.required
25-2.Should English classes be compulsory at the elementary or primary school level in countries where it is not the native language？（2005）
A.required B.necessary C.select D.permanent
26-1.All information reported to or likewise obtained by the commission is considered confidential.（2004）
A.in a similar way B.in another way
C.in a direct way D.in an unauthorized way
26-2.Icouldn’t afford to fly home，and a train ticket was likewise beyond my means.（2015）
A.also B.nonetheless C.furthermore D.otherwise
27-1.So strange were the circumstances of my story that I can scarcely believe myself to have been a party to them.（2011）
A.just B.hardly C.almost D.definitely
27-2.It was 38 degrees and the air conditioning barely cooled the room.（2016）
A.simply B.quickly C.hardly D.strongly
28-1.Curt Carlson，the wealthiest man in Minnesota，owned a hotel and travel company with sales reaching in the neighborhood of $ 9 billion.（2011）
A.precisely B.merely C.substantially D.approximately
28-2.Drug use accounts for approximately three-quarters of all reported cases of HIV in the country.（2012）
A.possibly B.roughly C.generally D.specifically
29-1.We have a responsibility to ensure our nation’s continued prosperity and the most sensible way to do this is by investment in basic scientific research.（2004）
A.effective B.efficient C.significant D.reasonable
29-2.Some psychologists argue that the traditional idea “spare the rod and spoil the child” is not rational .（2001）
A.helpful B.kind C.sensible D.effective
29-3.By advocating moderate change，they think that they can keep consumer costs low.（2007）
A.reasonable B.radical C.immediate D.minimum