gmat第一周讲义博森GMATCR,RC SC和基础英语能力专项

1、博森GMAT CR, RC, SC 和基础英语能力专项讲义编写CRQ1 Most of the worldpply of uranium currently comes from mines.It issible to extract uranium from seawater, but the cost ofng so is greatern the pricen uranium fetches on the world market.Therefore, until thecost of extracting uranium from seawater can somehow be red

2、uced, thismethod of obtaining uranium is unlikely to be commerlly viable.Which of the following would it be most useful to determine in evaluating theargument?(A) Whether the uranium in deits on land is raly being depletedWhether most uranium is used near where it is minedWhether there are any techn

3、ological advan reducing the cost of extracting uranium from seawatert show promise of(D) Whether the total amount of uranium in seawater is significantly greatern the total amount of uranium on land(E) Whether uranium can be extracted from freshwatercost of extracting it from seawaterost similar to

4、theQ2 It is true of both men and woment those who marry as young adults livelongern those who never marry. This does not showt marriage causespeople to live longer, since, as compared with otheople of the same age,young adults who are about to get married have fewer of the unhealthy habitst can caus

5、e ato have a shorter life, most notably smoking andimmoderate drinking of alcohol.Which of the following, if true, most strengthens the argument above?A.Marriage tends to cause people to engage less regularly in sportsinvolve risk of bodily harm.tB.A marriedbitwho has an unhealthy habit is more like

6、ly to give uprson with the same habit who is unmarried.nC.rson who smokes is muore likelyn a nonsmoker to marry awho smokes at the time of marriage, and the same is true forpeople who drink alcohol immoderay.D.Among people who marry as young adults, most of those who give up an unhealthy habit after

7、 marriage do not resume the habit later in life.Among people who as young adults neither drink alcohol immoderay nor smoke, those who never marry live as long as those who marry.E.Q3 Over the past five years, the price gap betn name-brand cereals and lessexpensive store-brand cereals hase so widet c

8、onsumers have beenswitching increasingly to store brands despite the name brands repuion forbetter quality.To attract these consumers back, several manufacturers ofname-brand cereals plan to narrow the price gap betn their cereals andstore brands to lessn what it was five years ago.Which of the foll

9、owing, if true, most seriously callso question the likelihoodt the manufacturers plan will succeed in attracting back a large percentageof consumers who have switched to store brands?A.There is no significant difference among manufacturers of name-brandcerealshe prithey charge for their products.B.C

10、onsumers who have switched to store-brand cereals have generally been satisfied with the quality of those cereals.Many consumers would never think of switching to store-brand cereals because they beve the name brand cereals to be of better quality.C.D.Because of lower advertising costs, stores are a

11、bleto offer their ownthose charged forbrands of cereals at significantly lower priname-brand cereals.nE.Totalannualsalesofcerealsincludingbothname-brandandstore-brand cerealshave not increased significantly over the past fiveyears.Q4 Many people sufferlergic reaction to certain sulfites, including t

12、hoset are commonly added to wine as preservatives.However, since there are several wine makers who add sulfites to none of the wines they produce, peoplewho would like to drink wine but are allergic to sulfites can drink wines producedby these wine makers without riskinglergic reaction to sulfites.W

13、hich of the following is an amption on which the argument depends?A.These wine makers have been able to duplicate the preservative effectproduced by adding sulfites by meanst do not involve adding anypotentially allergenic substanto their wine.B.C.D.Not all forms of sulfite are equally likely to pro

14、duce the allergic reactions. Wine is the only beverage to which sulfites are commonly added.Apart from sulfites, there are no substancommonly present in winetgive rise tolergic reaction.E.Sulfites are not naturally present in the wines produced by these winemakers in amounts large enough to producew

15、ho drinks these wines.lergic reaction in someoneQ5In Kravonia, the average salary for jobs requiring a college degree hasalways been highern the average salary for jobst do not require a degree.t over the next four yearsCurrent enrollments in Kravonias colleges indicatethe percentage of the Kravonia

16、n workforce with college degree will increase dramatically. Therefore, the average salary for all workers in Kravonia is likelyto increase over the next four years.Which of the following is an amption on which the argument depends?n one college degree earn more, oA.Kravonians with moreage,n do Kravo

17、nians with only one college degree.The percentage of Kravonians who attend college in order to earn higherB.salaries is higher nown it was several years ago.C.The higher average salary for jobs requiring a college degree is not due largely to a scarcity among the Kravonian workforce of people wicoll

18、ege degree.D.The average salary in Kravonia for jobst do not require a collegedegree will not increase over the next four years.Few members of the Kravonian workforce earned their degrees in other countries.E.Q6 The growing popularity of computer-based activities was widely expected to result in a d

19、eclineeleviviewing, since id been amedt peoplelack sufficient free time to maain currentevi-viewing levels whilespending increasing amounts of free time on the computer.t amption,however, is evidently false: in a recentsurvey concerning media use, avery large majority of respondents who report incre

20、asing time spent perk using computer report no changeime spent watchingevi.Which of the following would be most useful to determine in order to evaluate the argument?A.Whether a large majority of the survey respondents reported watchingeviregularlyB.Whether the amount of time spent watchingeviis dec

21、liningamong people who reportt they rarely or never use computersC.Whether the type ofeviprograms awatches tends tochanges as the amount of time spent perk using computer increasesD.Whether a large majority of the computer ownershe survey reportedspending increasing amounts of time perk using comput

22、ersE.Whether the survey respondents reports of time spent using computersincluded time spent using computers at work.Q7 In1992 outlaw fishing boats began illegally harvesting lobsters from theterritorial waters of the country of Belukia. Soon after, the annual tonnage oflobster legally harvested in

23、Belukian waters began declining; in 1996, despite there being no reduction he level of legal lobster fishing activity, the local catch was 9,000 tons below pre-1992 levels. It is therefore highly likely t the outlaw fishing boats harvested about 9,000 tons of lobster illegally t year.Which of the fo

24、llowing is an amption on which the argument depends?A. The illegal lobster harvesting was not so extensivet the population ofcatchable lobsters in Belukias territorial waters had sharply declined by1996B. The average annual lobster catch, increased steadily since 1992.ons, of an outlaw fishing boat

25、is hasC.Outlaw fishing boats do not, as a group, harvest more lobsters licensed lobster-fishing boats.n doD.The annual legal lobster harvest in Belukia in 1996 was not significantlylessn 9,000 tons.E.A significant proportion of Belukias operators of licensed lobster-fishing boats were out of busines

26、s betn 1992 and 1996Q8 In a study conducted in Pennsylvania, servers in various restaurants wrote“nk you” on randomly selected bills before presenting the bills to theircustomers.Tips on these bills were an average of three percentage poshighern tips on bills without the message.Therefore, if server

27、s inPennsylvania regularly wrote “nk you” on restaurant bills, their averagee from tips would be significantly highern it otherwise would havebeen.Which of the following is an amption on which the argument res?A.The “nk you” messages would have the same impact on regularpatrons of a restaurant as th

28、ey would on occarestaurant.al patrons of the sameB.Regularly seeing “nk you” written on their bills would not leadrestaurant patrons to revert to their earr tiphabits.C.The written “nk you” reminds restaurant patronst tips constitutea significant part of thee of many food servers.D.The rate at which

29、 people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.Virtually all patrons of the Pennsylvania restaurants in the study whoE.were given a bill with “nk you” written on it left a larger tipotherwise would have.n theyQ9 In two months, the legal minimum wage in the

30、country of Kirlandia willincrease from five Kirlandic dollars(KD5.00) Per hour to KD5.50 per hour.Opponents of this increase have arguedt the resulting rise in wages willdrive the inflation rate up. In fact its impact on wages will probably be negligible,since only a very small proportion of all Kir

31、fandic workers are currently receivinglessn KD5.50 per hour.Which of the following, if true, most seriously weakens the argument?A.Most people in Kirlandia who are currently earning the minimum wage have been employed at their current jobs for lessn a year.B.Some firms in Kirlandia have paid workers

32、 considerably less per hour, in violation of Kirlandic employment regulations.n KD5.00C.Many businesses hire trainees at or near the minimum wage but must reward trained workers by ke ng their pay levels above the pay level of trainees.D. The greatest growth in Kirlandias economy in recent years has

33、 been inthose sectors where workers earn wagest tend to be much higher n the minimum wage.E. The current minimum wage is insufficient for a worker holding only one job to earn enough to support a family, even when working full time att job.Q10 According to a widely held economic hypothesis, iming st

34、rictenvironmental regulations redu economic growth. This hypothesis is undermined by the fact t the s es with the strictest environmental regulations also have the highest economic growth. This fact does not showt environmental regulations promote growth, however, since .A.those ses with the stricte

35、st environmental regulations invest the mostin education and job trainingB.even those sest have only moderay strict environmentalregulations have higher growth regulationsn those with the least-strictC.many sest are experiencing reduced economic growth areconsidering weakening their environmental re

36、gulationsD.afterroducing stricter environmental regulations, many sesexperienced increased economic growthE.even those ses with very weak environmental regulations have experiencedeast some growthQ11 Whales originatedhe freshwater lakes and rivers of ancient Asia about sixty million years ago.Not un

37、til about ten million years later did species ofwhales develop spe Although fossil evidenlized kidneys enabling them to drink salt water. howst some early whale speciest lacked suchkidneys sometimes swamhe Earths saltwater oceans, these species musthave had to return frequently to freshwater rivers

38、to drink.Which of the following is most strongly supported by the information given?A.Fossils of whale species dating from betn sixty million and fiftymillion years ago will not be found on continentst were at the time separated from ancient Asia by wide expanses of ocean.B.Among whale fossilst date

39、 from latern about fifty million yearsago, none are fossils of whale speciest dronly fresh water.C.Fossils of whale speciest drfresh water will not be found in closeproximity to fossils of whale speciest drsalt water.D.Theearstwhalestdrsalt theirwater sesdifferedfrom of spe lizedfresh-water-drinking

40、 whales only in kidneys.E.Bet n sixty million and fifty million years ago, the freshwater lakes and rivers in which whales originated were gradually invaded by salt water.Q12 Trancorp currently transports all its goods to Burland Island by truck.The only bridge over the channel separating Burland fr

41、om the mainland is congested, and trucks typically spend hoursraffic.Trains can reach the channel morequicklyn trucks, and freight cars can be transported to Burland by bargest typically cross the channel in an hour.Therefore, to reduhiptime,Trancorp plans to switch to trains and barges to transport

42、 goods to Burland.Which of the following would be most important to know in determining whetherTrancorps plan, if implemented, is likely to achieve its goal?A Whether transporion by train and barge would be substantially lessexpensiven transporion by truck.B.Whether there are boatst can make the tri

43、p betn the mainlandand Burland fastern barges canC.D.Whether loading the freight cars onto barges is very time consumingWhether the average number of vehicles traveliner the bridgeo Burland has been relatively constant in recent yearsE.Whether most trucks transporting goods mainland emptyo Burland r

44、eturn to theQ13Pltongenerallythriveinareasoftheoceanwithsufficientconcentrations of certain nitrogen compounds near the surface, where pltonlive. Nevertheless, some areas, though rich in these nitrogen compounds, have few pl ton. These areas have particularly low concentrations of iron, and oceanogr

45、aphers hypothesize t this shortage of iron prevents pl tonfrom thriving. However, an experimental release of iron compounds o one such area failed to produce a thriving pl ton population, even though local iron concentrations increased immedia y.Which of the following, if true, argues most strongly

46、against concluding, on the basis of the information above, t the oceanographers hypothesis is false?A.Not all of the nitrogen compoundst are sometimes found in relativelyhigh concentrationshe oceans are nutrients for plton.B.Certain areas of the ocean support an abundance of pl having particularly l

47、ow concentrations of iron.ton despiteC.The release of the iron compounds did not increase the supply of nitrogen compoundshe area.A few days after the iron compounds were released, ocean currents displaced the iron-rich water from the surface.D.E.The iron compounds releasedo the area occur naturally

48、 in areas of theocean where plton thrive.Q14 Garnet and RenCo each provide health care for their employees.Garnetpays for both testing of its employees cholesterol levels and treatment of highcholesterol.This policy saves Garnet money,since high cholesterol left t require very expensivesame finanl i

49、ncentive tountreated for many years leads to conditions treatment.However, RenCo dose not have the adopt such a policy, because .A. early treatment of high cholesterol dose sibility of a stroke later in lifenot entirely eliminate theB. the mass media regularly feature stories encouraging people to m

50、aaindietst are low in cholesterolC.D.RenCo has significantly more employeesn GarnesRenCos employees are unlikely to have higher cholesterol levels Garnets employeesthe average length of time an employee stays with RenCo is less is with GarnetnE.n itQ15 Historian:Newton developed mathematical concept

51、s and techniquestare fundamental to modern calculus.Leibniz developed closelyogoust these recentlyconcepts and techniques.It has traditionally been thoughtdiscoverieswereindependent.Researchershave,however,discovered notes of LeibnizSeveral scholars have arguedt discuss one of Newtons books on mathe

52、matics.t since the book includes a presenion ofNewtons calculus concepts and techniques, and since the notes were writtenbefore Leibniz own development of calculus concepts and techniques,it is virtually certaint the traditional view is false.A more cautiousn this is called for, however.Leibniz note

53、s are limited toearly sections of Newtons book, sectionst precede the ones inwhich Newtons calculus concepts and techniques are presented.In the historians reasoning, the two boldfaced portions play which of thefollowing roles?A.Theprovides evidence in support ofthe overallitiont thehistorian defend

54、s; the second is evidences been used to supportan opTheingition.B.provides evidence in support ofthe overallitiont thehistorian defends; the second istition.C.Theprovides evidence in support of anermediatet the historianermediateis drawn to provide support for the overallitionttdefends; the second p

55、rovides evidence against.D.Theis evidences been used to support asecond is evidence offeredt thesupport of thehistorian criticizes; theinhistorians ownition.E.Theis evidences been used to support at thet substantiateshistorian criticizes; the second is further informationt evidence.Q16 United Ses ma

56、nufacturers currently produce mostof the worldssolar-er generators-most of which are exported to Europe.However,y capture is fundingEuropean manufacturers are emerging and probably will ultimamuch of the European market.The United Sesernmentinitiativesended to encourage use of solarer withhe United

57、Ses.If these initiativecceed in increasing the demand for solar-er generatorsin the United Ses, United Ses manufacturers will probably maainsignificant production levels, since .(A) some United Ses manufacturers have been substantially increasing theiroutput over the last several years(B) the effici

58、ency of solar-er generators in converting energy from the Suno electricer is not improving as fast as it once did(C) just as European manufacturers enjoy certain competitive advantages inEurope, so do United Ses manufacturershe United Ses(D) Europeanuse of solarernments are currently undertaking ini

59、tiatives to stimulate theer within Europe(E) the current market for solar-limiteder generatorshe United Ses is veryQ17 Five years ago, as part of a plan to encourage citizens ofLevaska toernmentincrease the amount of money they puto savings, Levaskasroduced spel savings accounts in which up to $3,00

60、0 a year can be savedwith no tax due on theholder reacheserest unless money is withdrawn before the accountof sixty-five.Millions of dollars have accumulatedhespel accounts, so theernments plan is obviously working.Which of the following, if true, most seriously weakens the argument?A.A substantial