2005年考研英语试题及答案

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1、2005年全国硕士研究生入学统一考试英语试题SectionIUseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmark[A],[B],[C]or[D]onANSWERSHEET1(10points)Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals,thisi

2、slargelybecause,animals,westandupright.Thismeansthatournosesaretoperceivingthosesmellswhichfloatthroughtheair,themajorityofsmellswhichsticktosurfaces.Infact,,weareextremelysensitivetosmells,wedonotgenerallyrealizeit.Ournosesarecapableofhumansmellsevenwhenthesea

3、retofarbelowonepartinonemillion.Strangely,somepeoplefindthattheycansmellonetypeofflowerbutnotanother,othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogeneratesmellreceptorsinthenose.Thesereceptorsarethecellswhichs

4、ensesmellsandsendtothebrain.However,ithasbeenfoundthatevenpeopleinsensitivetoacertainsmellcansuddenlybecomesensitivetoitwhentoitoftenenough.Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsittokeepallsmellreceptorsworkingallthetimebutcannewrecepto

5、rsifnecessary.Thismayexplainwhywearenotusuallysensitivetoourownsmells—wesimplydonotneedtobe.Wearenotoftheusualsmellofourownhouse,butwenewsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptorsforunfamiliarandemergencysignalsthesmellofsmoke,whichm

6、ightindicatethedangeroffire.1.[A]although[B]as[C]but（C）[D]while2.[A]above[B]unlike[C]excluding（B）[D]besides3.[A]limited[B]committed[C]dedicated（A）[D]confined4.[A]catching[B]ignoring[C]missing（C）[D]tracking5.[A]anyway[B]though[C]instead（B）[D]therefore6.[A]evenif

7、[B]ifonly[C]onlyif（A）[D]asif7.[A]distinguishing[B]discovering[C]determining（D）[D]detecting8.[A]diluted[B]dissolved[C]dispersed（A）[D]diffused9.[A]when[B]since[C]for（D）[D]whereas10.[A]unusual[B]particular[C]unique（B）[D]typical11.[A]signs[B]stimuli[C]messages（C）[D

8、]impulses12.[A]atfirst[B]atall[C]atlarge（A）[D]attimes13.[A]subjected[B]left[C]drawn（D）[D]exposed14.[A]ineffective[B]incompetent[C]inefficient（C）[D]insufficient15.[A]introduc