7届高三下学期周练1英语试题附答案.docx
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7届高三下学期周练1英语试题附答案
河北定州中学2016-2017学年第二学期高三英语周练试题
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一、阅读理解
Ifyoulookatthenightsky,you’lloftenseestarsmovingveryquickly.Infact,theymovemuchmorequicklythantheyshouldaccordingtotheirsizeandthelawsofphysics.
Scientistsdonotcompletelyunderstandwhythespeedofthesestarsissohigh.Butmanybelievethereasonisthatmuchoftheuniverseismadeofsomethingcalled“darkmatter”.Groupsofstarscalledgalaxies,suchastheMilkyWay,mightevenbemadeupof90percentdarkmatter.
Howmuchsomethingweighsdependsonwhereitis.ThesameobjectweighsonlyhalfasmuchonMarsasitdoesonEarthandalmostthreetimesasmuchonJupiter.Soscientistsprefertotalkaboutthemass(质量)ofsomethingratherthanhowmuchitweighs,becausemassdoesnotchange.Theycanworkoutthemassofgalaxiesbymeasuringthedistancebetweenthemandthespeedtheymoveat.
Recently,JorgePeñarrubia,asenioracademicatEdinburghUniversity,UK,andhisteamdiscoveredsomethinginteresting:
ThemassoftheMilkyWayisonlyhalfasmuchasthemassofanothernearbygalaxy,Andromeda.Thisseemsstrange,anddarkmattermayexplainwhy.
Findingoutmoreaboutdarkmattercouldhelpusunderstandhowtheuniversebegan,butthisisnoteasy.Lotsofscientistswithdifferenttypesofexpertknowledgeareworkingontheproblem.
Wecan’tseedarkmatter,it’sverydifficulttomeasureandwecan’tfindoutitsmass.Unlikestars,darkmatterdoesn’tproduceorreflectlight.Butwecanmakeagoodguessthatitistherebecauseofthewaythingsmoveandthewaylightbends.ExpertsnowthinkdarkmattermaybeverydifferentfromthematterthatwefindonEarth.Theremayalsobefivetimesasmuchdarkmatterintheuniverseasordinarymatter.
1.Somethingthatweighs15kgonEarthweighsabout_____onMarsand_____onJupiter.
A.7.5kg,45kgB.30kg,45kgC.45kg,7.5kgD.5kg,30kg
2.TheauthormentionsthemassesoftheMilkyWayandAndromedamainlyto
_____.
A.explainwhythesameobjecthasadifferentweightondifferentstars
B.comparethedistancebetweentheMilkyWayandAndromeda
C.showthatstudyingdarkmattercouldhelptoanswersomescientificquestions
D.supporttheideathatscientistsprefertotalkaboutmassinsteadofweight
3.Darkmatterisdifficulttoinvestigatebecause_____.
A.ittravelsataveryfastspeed
B.wecan’tseewhereitisormeasureitsmass
C.it’shardtomeasurethelightitproducesandreflects
D.itismuchbiggerthanordinarymatterinsize
4.Accordingtothetextdarkmatter_____.
A.couldacceleratethespeedofstars
B.couldlessenthemassofobjectsingalaxies
C.makesuptheentireuniverseanditsstars
D.mayhelpusidentifytheoriginsoftheuniverse
What'sthemostimportantthinginlife?
People'sanswersvarygreatly.ForBritishscientistRobertEdwards,theanswerishavingachild."Nothingismorespecialthanachild,"hetoldtheBBC.
Edwards,theinventoroftheInVitroFertilization(IVF)technology—morecommonlyknownas"test-tube(试管)baby"technology—passedawayonApril10,2013attheageof87.
"Edwardschangedthelivesofmillionsofordinarypeoplewhonowrejoice(高兴)inthegiftoftheirownchild,"saidPeterBraude,aprofessoratKing'sCollegeLondon."Heleavestheworldamuchbetterplace."
Edwardsstartedhisexperimentsasearlyasthe1950s,whenhehadjustfinishedhisPhDingenetics.Atthattime,muchofthepublicviewedtest-tubebabiesas"scary",accordingtoMarkSauer,aprofessoratColumbiaUniversity,US.
EdwardsandhiscolleaguePatrickSteptoefacedoppositionfromchurches,governmentsandmedia,nottomentionattacksfrommanyoftheirfellowscientists."PeoplesaidthatweshouldnotplayGodandweshouldnotinterferewithnature,"EdwardsoncetoldTimes.Hesaidthathefelt"quitealone"atthetime.
"ButEdwardswasafighter,andhebelievedinwhathewasdoing,"saidSauer.Withoutsupportfromthegovernment,thetwostruggledtoraisefundstocarryon.Andin1968theyfinallydevelopedamethodtosuccessfullyfertilizehumaneggsoutsidethebody.
Thefirsttest-tubebabywasbornonJuly25,1978.HernamewasIsLouiseBrown.Despitepeople'ssafetyconcerns,Brownwasjustashealthyasotherchildren.
"IVFhadmovedfromvisiontorealityandanewerainmedicinehadbegun,"BBCcommented.
Eversincethen,publicopinionhasevolvedconsiderably.Coupleswhowereunabletohavebabiesbeganthronging(拥向)toEdwards'clinic.Nowadays,Reutersreports,some4.3millionother"test-tube"childrenexist.EdwardsreceivedaNobelPrizein2010andwasknighted(封为爵士)byQueenElizabethinthefollowingyear.
Beforehisdeath,EdwardswasstillintouchwithLouise."Heislikeagranddadtome,"shesaidinaninterviewwiththeDailyMail.
Heisagranddadtomillions,infact.
5.What’sthearticlemainlyabout?
A.Thefirsttest-tubebaby.
B.Anewerainmedicine.
C.TheinventorofIVFtechnology.
D.ThechangesIVFtechnologyhasbrought.
6.ThewritermentionedPeterBraudeto.
A.showhowdifficultitwasforEdwardstodohiswork
B.describewhatkindofpersonEdwardswas
C.explainwhyheislovedbyallchildren
D.commentonhisachievement
7.Theunderlinedword"opposition"inParagraph6isclosestinmeaningto""
A.attackB.supportC.testD.influence
8.WhatisthecorrectorderofeventsinEdwards'life?
a.HereceivedaNobelPrize.
b.Hestruggledtoraisefunds.
c.Thefirsttest-tubebabywasborn.
d.HewasknightedbyQueenElizabethII.
e.Hesucceededinfertilizinghumaneggsoutsidebody.
f.HestartedhisexperimentsonIVFtechnology.
A.f-e-b-c-a-dB.f-b-e-c-d-a
C.f-b-e-c-a-dD.f-e-d-a-c-b
Awarmdrinkofmilkbeforebedhaslongbeenthebestchoiceforthosewantingagoodnight’ssleep.Butnowastudyhasfounditreallydoeshelppeoplenodoff—ifitismilkedfromacowatnight.
Researchershavediscoveredthat“nightmilk”containsmoremelatonin(褪黑激素),whichhasbeenproventohelppeoplefeelsleepyandreduceanxiety.
Thestudy,byresearchersfromSeoul,SouthKorea,involvedmicebeingfedwithdriedmilkpowdermadefromcowsmilkedbothduringthedayandatnight.
Thosegivennightmilk,whichcontained10timestheamountofmelatonin,werelessactiveandlessanxiousthanthosefedwiththemilkcollectedduringdaytime,accordingtothestudypublishedinTheJournalofMedicinalFood.
Nightmilkquickenedthestartofsleepandcausedthemicetosleeplonger.
Whiletheeffectofcowsmilkharvestedatdifferenttimeshasnotbeentestedonhumansuptonow,takingmelatonindrugshasbeensuggestedtothosewhoarestrugglingtofallasleepatnight.
Previousstudieshavealsoindicatedthatmilkcanbeexcellentforhelpingsleepbecauseofthecalciumcontent,whichhelpspeopletorelax.
Milkisalsosugar-freeandadditive-freewithnutritionistsrecommendingskimmedmilkasthebestchoicebeforebedasitistheleastfattening.Themorefatyoutakeinbeforebedtime,thegreaterburdenyouwillputonyourbodyatnight.
9.Accordingtothetext,themicefedwithdaytimemilk_______.
A.startedsleepmoreeasilyB.werelessactive
C.weremoreanxiousD.wokeuplater
10.WhichofthefollowingisTRUEofmelatoninaccordingtothetext?
A.It’susedinsleepingdrugs
B.Itexistsinmilkingreatamount
C.Itcanmakepeoplemoreenergetic
D.It’sbeentestedonmicefortenyears
11.Whatcanbeasuitabletitleforthetext?
A.MilkDrinkingandHealth
B.Fat,SugarandHealth
C.AnExperimentonMice
D.NightMilkandSleep
12.Howdoestheauthorsupportthethemeofthetext?
A.Bygivingexamples.
B.Byprovidingresearchresults.
C.Byexplainingstatisticaldata.
D.Bystatingarguments
IsitpossiblethatthesinkingoftheTitanicwascausedbyaghost?
Alotofthestorybelowistrue…butdiditreallyhappenquitelikethis?
OurstorybeginsnotintheicycoldwatersoftheNorthAtlantic,butratherthousandsofmilesawayinEgypt.Itishere,perhaps,thatwecanfindthestartofthemysteryoftheTitanic,intheyear1910,inthegreatcityofCairo.Oneday,afamousprofessorofEgyptianhistorycalledDouglasMurraywasstayinginCairo,whenhewascontactedbyanAmericanadventurer.
TheAmericanhadsomethingunusualtoofferMurray,somethingthatwascertaintothrillhim:
abeautifulancientEgyptianmummycase,containingthemummyofanEgyptianqueen.Itwasover3000yearsold,butinbeautifulcondition------gold,withbrightpaintingsonit.Murraywasdelightedwithboththeobjectandtheasking-price.Hegavethemanachequeimmediately.
Thechequewasnevercashed.ThateveningtheAmericanadventurerdied.Forhispart,MurrayarrangedtohavethetreasuresentbacktoBritain.However,itwasnotlongbeforehelearntmoreaboutthebeautifulmummycase:
Onthewallsofthetombinwhichithadbeendiscovered,thereweremessageswhichwarnedofterribleconsequencestoanyonewhobrokeintothetomb.Murraywasdisbelievingofthesewarningsuntilafewdayslater,whenagunhewasholdingexplodedinhishand,shatteringhisarm.Thearmhadtobecutoff.
Aftertheaccident,Murraydecidedtoreturntohishomeland.Onthereturnjourney,twoofhiscompanionsdiedmysteriously,andtwoservantswhohadhandledthemummyalsopassedaway.Thenow-terrifiedMurraydecidedhewouldgetridofthecursedcaseassoonashearrivedinLondon.AladyheknewnamedJanetJonessaidshewouldlikeit,sohegaveittoher.Shortlyafterwards,Jones’motherdied,andsheherselfcaughtastrangedisease.Shetriedreturningthemummy,butnaturallyMurrayrefusedit.Intheend,itwaspresentedtot