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时间:2018-08-31
《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,westandupright.Thismean
2、sthatournosesare3toperceivingthosesmellswhichfloatthroughtheair,4themajorityofsmellswhichsticktosurfaces.Infact 5,weareextremelysensitivetosmells,6wedonotgenerallyrealizeit.Ournosesarecapableof7humansmellsevenwhentheseare8tofarbelowonepartinonemillion. Strangely,somepeoplefindthattheycansmellon
3、etypeofflowerbutnotanother,9othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate10smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend11tothebrain.However,ithasbeenfoundthatevenpeopleinsensitivetoacertainsmell12cansuddenlybe
4、comesensitivetoitwhen13toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatbrainfindsit 14tokeepallsmellreceptorsworkingallthetimebutcan15newreceptorsifnecessary.Thismay16explainwhywearenotusuallysensitivetoourownsmellswesimplydonotneedtobe.Wearenot17oftheusualsmellofourownhouseb
5、utwe18newsmellswhenwevisitsomeoneelse's.Thebrainfindsitbesttokeepsmellreceptors19forunfamiliarandemergencysignals20thesmellofsmoke,whichmightindicatethedangeroffire. 1.[A]although[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
6、]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]discovering[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]particula
7、r[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]left[C]drawn[D]exposed 14.[A]ineffective[B]incompetent[C]inefficient[D]insufficient 15.[
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