英语六级新题型选词填空练习题及答案Word格式文档下载.docx
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英语六级新题型选词填空练习题及答案Word格式文档下载.docx
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forbillionsofyears,
andhasthusgotrathergoodatit.
ApaperpublishedinSmall,
ananotechnologyjournal
,
setsoutthelatestexampleofthe
(5)__________.
Init,
agroupofresearchersledbySarahStanilandattheUniversityofLeeds,
inBritain,
describeusingnaturallyoccurringproteinstomakearraysoftinymagnets,similartothoseemployedtostoreinformationindiskdrives.Theresearcherstooktheir
(6)__________fromMagnetospirillummagneticum,
abacteriumthatissensitivetotheEarth'
smagneticfieldthankstothepresencewithinitscellsofflecksofmagnetite,
aformofironoxide.
Previousworkhasisolatedtheproteinthatmakestheseminiaturecompasses.Usinggeneticengineering,
theteammanagedtopersuadeadifferentbacterium—Escherichiacoli,
aubiquitouscritterthatisaworkhorseofbiotechnology—to
(7)__________thisproteininbulk.
Next,
theyimprintedablockofgoldwithamicroscopicchessboardpatternofchemicals.
Halfthesquarescontainedanchoringpointsfortheprotein.
Theotherhalfwereleftuntreatedascontrols.
Theythendippedthegoldintoasolutioncontainingtheprotein,
allowingittobindtothetreatedsquares,
anddunkedthewholelotintoaheated
(8)__________ofironsalts.
Afterthat,
theyexaminedtheresultswithanelectronmicroscope.
Sureenough,
groupsofmagnetitegrainshadmaterialisedonthetreatedsquares,
shepherdedintoplacebythebacterialprotein.
Inprinciple,
eachofthesemagneticdomainscouldstoretheoneorthezeroofabitofinformation,
accordingtohowitwaspolarised.
Gettingfromtheretoarealcomputermemorywouldbealongroad.
Forastart,
thegrainsofmagnetitearenotstrongenoughmagnetstomakeausefulmemory,
andthesizeofeachdomainishugebymoderncomputing
(9)__________.
ButDrStanilandreckonsthat,
withenoughtweaking,
bothoftheseobjectionscouldbedealtwith.
The
(10)__________ofthisapproachisthatitmightnotbesocapital-intensiveasbuildingafab.
Growingthingsdoesnotneedasmuchkitasmakingthem.Ifthetweakingcouldbedone,
therefore,
theresultmightgivethewordbiotechnologyawholenewmeaning.
new
meaning.
A)
components
B)
advantage
C)
standards
D)
compliments
E)
essence
F)
inspiration
G)
disadvantage
H)
doubles
I)
solution
J)
resolution
K)
devices
L)
manufacture
M)
spirit
N)
product
O)
technique
(二)NicejuicyApple
ALTHOUGHheisstill
(1)__________thingsupatDell,
anailingcomputer-maker,
CarlIcahnhasfoundtimetotiltatanothertechtitan.OnAugust13ththeveteranshareholderactivist
(2)__________thathehadbuiltupastakeinApple,
thoughhestayedmumaboutexactlyhowmanyshareshehadbought.MrIcahn’sintentions,
however,
arecrystalclear:
hewantstheconsumer-electronicsbehemothtoexpandplanstoreturnsomeofitswhopping$147billionofcashandmarketablesecuritiestoshareholders.
MrIcahnisalsoaftermoremoneyatDell,
wherehehasbeenlobbyingwithalliesagainsta
(3)__________buy-outplanputforwardbyMichaelDell,
thefirm’sfounder,
andSilverLake,
aprivate-equityfirm.Hispressinghasalreadyforcedthebuy-outgrouptoraiseitsinitialofferbyover$350m,
to$24.8billionandhehastakenhis
(4)__________tothecourtsinabidtoextractanevenhigherprice.
Othertechfirmshavebeenattractingtheattentionofactivistinvestorstoo.EarlierthisyearValueActCapital,
aninvestmentfund,
saidithadbuiltupa$2billionstakeinMicrosoft.JaguarFinancial,
aCanadianbank,
hasbeen
(5)__________freshthinkingattroubledBlackBerry,
whichannouncedonAugust12ththatitisexploringvarious
(6)
__________options,
includingalliancesandapossiblesale.AndElliottManagement,
ahedgefund,
hasbeenlobbyingforchangeatNetApp,
adata-storagefirmthatitthinkscoulddomoretoimprovereturnsto
(7)__________.
Onereasontechfirmshavefoundthemselvesinactivists’crosshairsisthat,
likeApple,
somebuiltupbigcashpilesduringtheeconomicdownturnandhavebeenslowtousethemoney.Financiershopetogetthemtoloosentheirpurse-stringsfasterandtopocketsomeofthecash.MrIcahnwantsAppletoincreaseand
(8)__________asharebuy-backprogrammethatiscurrentlysettoreturn$60billiontoshareholdersbytheendof2015.
Anotherreasonthattechfirmsmaketemptingtargetsforshareholderactivistsisthatswiftchangesintechnologiescantripupeventhemightiest.WitnessthecaseofMicrosoft,
whichruledtheroostduringthepersonal-computererabuthasstruggledtoadapttoaworldinwhichtabletsandsmartphonesarealltherage.Investorshopetomintmoneybypushingcompaniestochangemorerapidlyinresponsetosuchupheavalsintheirmarkets.
Therewardscanbesubstantial.EggedonbyThirdPoint,
anactivisthedgefund,
Yahoo
(9)__________MarissaMayerasitsnewchiefexecutiveinJuly2012.Bythetimeshecelebratedayearinthejoblastmonth,
thetroubledwebgiant’ssharepricehadrisenbyover70%.InJulythehedgefundsoldabigchunkofsharesbacktoYahoo.MrIcahnthinksApple’sshareprice,
whichclosedat$499onAugust14th,
couldsoartooifthefirmfollowshisadviceonbuy-backs.Hetweetedthisweekthathehadhada“nice
(10)__________”withTimCook,
Apple’sboss,
abouthisidea,
thoughhedidnotsaywhatMrCookthoughtofit.IfAppledragsitsfeet,
expectthingstoturnnasty.
shareholdersB)
strategic
communicationD)
battle
conversationF)
encouraging
excitingH)
stirring
appointedJ)
race
revealedL)
method
accelerateN)
proposed
O)
Itisn'
tjustthebeerthat
(1)__________tobeerbellies.Itcouldalsobetheextracalories,
fatandunhealthyeatingchoicesthatmaycomewith
(2)
__________drinking.
Arecentstudyfoundthatmenconsumean
(3)__________433calories
(equivalenttoaMcDonald'
sdoublecheeseburger)
ondaystheydrinkamoderateamountofalcohol.About61%ofthecaloricincreasecomesfromthealcoholitself.Menalsoreporteatinghigheramountsofsaturatedfatsandmeat,
andlessfruitandmilk,
onthosedaysthanondayswhentheyaren'
tdrinking,
thestudyshowed.
Womenfaredabitbetter,
takinginanextra300caloriesonmoderate-drinkingdays,
fromthealcoholandeatingfattierfoods.Butwomen'
sincreaseincaloriesfromadditionaleatingwasn'
tstatisticallysignificant,
thestudysaid.
'
Menandwomenatelesshealthilyondaystheydrankalcohol,'
saidRosalindBreslow,
anepidemiologistwiththefederalNationalInstituteonAlcoholAbuseandAlcoholismandleadauthorofthestudy.'
Poorerfoodchoicesondrinkingdayshavepublic-health
(4)__________,'
shesaid.
Thefindingsdovetailwithcontrolledlabstudiesinwhich
(5)__________generallyeatmorefoodafterconsumingalcohol.Researcherssuggestthatalcoholmayenhance'
theshort-termrewardingeffects'
ofconsumingfood,
accordingtoa2010reportinthejournalPhysiology&
Behaviorthatreviewedpreviousstudiesonalcohol,
appetiteandobesity.
Butotherstudieshavepointedtoadifferenttrend.Moderatedrinkersgainlessweightovertimethaneitherheavydrinkersorpeoplewhoabstainfromalcohol,
particularlywomen,
thisresearchhasshown.Moderatedrinkingis
__________havingabouttwodrinksadayformenandoneforwomen.
Peoplewhogaintheleastweightaremoderatedrinkers,
regardlessof[alcoholic]beveragechoice,'
saidEricRimm,
anassociateprofessorofepidemiologyandnutritionatHarvardMedicalSchoolandchairmanofthe2010reviewofalcoholinthefederaldietary
(7)__________.Theweight-gaindifferenceismodest,
and'
startingtodrinkisnotaweight-lossdiet,'
hesaid.
Thevariousresearcheffortsformpartofalong-standing
(8)__________abouthowalcoholaffectspeople'
sappetites,
weightandoverallhealth.Researcherssaytherearen'
tsimpleanswers,
andsuggestthatindividuals'
metabolism,
drinkingpatternsandgendermayplayarole.
Alcoholis'
arealwildcardwhenitcomestoweightmanagement,'
saidKarenMiller-Kovach,
chiefscientificofficerofWeightWatchersInternational.Atsevencaloriespergram,
alcoholisclosertofatthantocarbohydrateorproteinincaloriccontent,
shesaid.Alcoholtendstolowerrestraint,
shenotes,
causingapersontobecomemore
(9)__________withwhatthey'
reeating.
Researchbolsteringtheroleofmoderatedrinkinginhelpingtocontrolweightgainwaspublishedin2004inthejournalObesityResearch.Thatstudyfollowednearly50,000womenovereightyears.Anearlierstudy,
publishedintheAmericanJournalofEpidemiologyin1994,
followedmorethan7,000peoplefor10yearsandfoundthatmoderatedrinkersgainedlessweightthannondrinkers.Studiescomparingchan
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