英语等级考试理工类B级真题及答案_精品文档_001.doc
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英语等级考试理工类B级真题及答案_精品文档_001.doc
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2009年度全国职称英语等级考试理工类(B级)真题及答案
人事考试教育网整理
第1部分:
词汇选项(第1~15题,每题1分,共15分)
下面每个句子中均有1个词或短语划有横线,请为每处划线部分确定1个意义最为接近的选项。
1 Wouldyoupleasecallmyhusbandassoonaspossible?
A visit B phone
C consult D invite
2 Wehadalongconversationaboutherparents.
A speech B question
C talk D debate
3 Thechairmanproposedthatwestopthemeeting.
A stated B announced
C demanded D suggested
4 Obviouslythesepeoplecanbereliedoninacrisis.
A livedon B dependedon
C believedin D joinedin
5 ThereisalwaysexcitementattheOlympicGameswhenanathletebreaksarecord.
A beats B maintains
C matches D tries
6 Allthepupilsseemtobeverycheerful.
A happy B healthy
C naughty D busy
7 Thetraditionalpaintingsareexhibitedonthesecondfloor.
A laid B displayed
C kept D stored
8 Shestoodthere,shakingwithfury.
A misery B laughter
C anger D cry
9 Maryevidentlyisthemostdiligentstudentamongus
A intelligent B beautiful
C talkative D hardworking
10PersistentattemptstointerviewGarbowerefruitless.
A Forceful B Reasonable
C Continuous D Firm
11Whycan'tyoustopyoureternalcomplaining?
A everlasting B long
C temporary D boring
12Hundredsofbuildingswerewreckedbytheearthquake.
A shaken B damaged
C fallen D jumped
13Thesepaintingsareconsideredbymanytobeauthentic.
A faithful B royal
C genuine D sincere
14Manyeconomistshavegivenintothefatallureofmathematics.
A attraction B simplicity
C power D rigor
15Tenyearsaftertheevent,herdeathstillremainsapuzzle
A mist B fog
C mystery D secret
第2部分:
阅读判断(第16~22题,每题1分,共7分)
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:
如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C.
RadiocarbonDating
Nowadaysscientistscananswermanyquestionsaboutthepastthroughatechniquecalledradiocarbon(放射性碳),orcarbon-14,dating.Onekeytounderstandinghowandbysomethinghappenedistodiscoverwhenithappened.
Radiocarbondatingwasdevelopedinthelate1940sbyphysicistWillardF.LibbyatheUniversityofChicago.Anatomofordinarycarbon,calledcarbon-12,hassixprotons(中子)andsixneutrons(质子)initsnucleus.Carbon-14,orC-14,isaradioactive,unstableformofcarbonthathastwoextraneutrons(原子核)。
Itreturnstoamorestableformofcarbonthroughaprocesscalleddecay(衰减)。
Thisprocessinvolvesthelossofheextraneutronsandenergyfromthenucleus.
InLibby'sradiocarbondatingtechnique,theweakradioactiveemissions(放射)fromhisdecayprocessarecountedbyinstrumentssuchasaradiationdetectorandcounter.hedecayrateisusedtodeterminetheproportionofC-14atomsinthesamplebeingdated.
Carbon-14isproducedintheEarth'satmospherewhennitrogen(氮)-14,orN-14,
interactswithcosmicrays(宇宙射线)。
ScientistsbelievesincetheEarthwasformed,themountofnitrogenintheatmospherehasremainedconstant.Consequently,C-14formationisthoughttooccurataconstantrate.NowtheratioofC-14toothercarbontomsintheatmosphereisknown.Mostscientistsagreethatthisratioisusefulfordatingitemsbacktoatleast50,000years.
AlllifeonEarthismadeoforganicmolecules(分子)thatcontaincarbonatomscomingfromtheatmosphere.SoalllivingthingshaveaboutthesameratioofC-14
atomstoothercarbonatomsintheirtissues(组织)。
Onceanorganism(有机体)diesittopstakingincarboninanyform,andtheC-14alreadypresentbeginstodecay.OvertimetheamountofC-14inthematerialdecreases,andtheratioofC-14toothercarbontomsgoesdown.Intermsofradiocarbondating,thefewerC-14atomsinasample,theolderthatsampleis.
16 Nowadaysmanyscientistsdependonradiocarbonfordatingage-oldobjects
A Right B Wrong C Notmentioned
17 Theradiocarbondatingtechniqueisonlyabout40yearsold
A Right B Wrong C Notmentioned
18 Anatomofordinarycarbonhassixprotonsandeightneutrons
A Right B Wrong C Notmentioned
19 Radarisusedtodeterminethecharacteristicsofradiocarbon
A Right B Wrong C Notmentioned
20 Radiocarbonisreliableindatinganobjectbacktoatleast50,000years.
A Right B Wrong C Notmentioned
21 TheC-14inanorganismbeginstodecaywhenitdies
A Right B Wrong C Notmentioned
22 Thehalf-lifeofC-14isabout25,000years.
A Right B Wrong C Notmentioned
第3部分:
概括大意与完成句子(第23~30题,每题1分,共8分)
下面
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