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ID:10653233
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页数:15页
时间:2018-07-07
《2005年考研英语试题》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、2005年考研英语试题SectionⅠUseofEnglish Directions: Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET1(10points) Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals,1thisislargelybecause,2animals
2、,westandupright.Thismeansthatournosesare3toperceivingthosesmellswhichfloatthroughtheair,4themajorityofsmellswhichsticktosurfaces.Infact 5,weareextremelysensitivetosmells,6wedonotgenerallyrealizeit.Ournosesarecapableof7humansmellsevenwhentheseare8tofarbelowonepartinonemill
3、ion. Strangely,somepeoplefindthattheycansmellonetypeofflowerbutnotanother,9othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate10smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend11tothebrain.Howev
4、er,ithasbeenfoundthatevenpeopleinsensitivetoacertainsmell12cansuddenlybecomesensitivetoitwhen13toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatbrainfindsit 14tokeepallsmellreceptorsworkingallthetimebutcan15newreceptorsifnecessary.Thismay16explainwhywea
5、renotusuallysensitivetoourownsmellswesimplydonotneedtobe.Wearenot17oftheusualsmellofourownhousebutwe18newsmellswhenwevisitsomeoneelse's.Thebrainfindsitbesttokeepsmellreceptors19forunfamiliarandemergencysignals20thesmellofsmoke,whichmightindicatethedangeroffire. 1.[A]altho
6、ugh[B]as[C]but[D]while 2.[A]above[B]unlike[C]excluding[D]besides 3.[A]limited[B]committed[C]dedicated[D]confined 4.[A]catching[B]ignoring[C]missing[D]tracking 5.[A]anyway[B]though[C]instead[D]therefore 6.[A]evenif[B]ifonly[C]onlyif[D]asif 7.[A]distinguishing[B]discov
7、ering[C]determining[D]detecting 8.[A]diluted[B]dissolved[C]determining[D]diffused 9.[A]when[B]since[C]for[D]whereas 10.[A]unusual[B]particular[C]unique[D]typical 11.[A]signs[B]stimuli[C]messages[D]impulses 12.[A]atfirst[B]atall[C]atlarge[D]attimes 13.[A]subjected[B]l
8、eft[C]drawn[D]exposed 14.[A]ineffective[B]incompetent[C]inefficient[D]insufficient 15.[
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