咋学APP考研必备｜看精华｜听微课｜做真题｜官方网站：www.zaxue100.com2005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,thisislargelybecause,animals,westandupright.Thismeansthatournosesaretoperceivingthosesmellswhichfloatthroughtheair,themajorityofsmellswhichsticktosurfaces.Infact,,weareextremelysensitivetosmells,wedonotgenerallyrealizeit.Ournosesarecapableofhumansmellsevenwhenthesearetofarbelowonepartinonemillion.Strangely,somepeoplefindthattheycansmellonetypeofflowerbutnotanother,othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogeneratesmellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsendtothebrain.However,ithasbeenfoundthatevenpeopleinsensitivetoacertainsmellcansuddenlybecomesensitivetoitwhentoitoftenenough.Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsittokeepallsmellreceptorsworkingallthetimebutcannewreceptorsifnecessary.Thismayexplainwhywearenotusuallysensitivetoourownsmells—wesimplydonotneedtobe.Wearenotoftheusualsmellofourownhouse,butwenewsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptorsforunfamiliarandemergencysignalsthesmellofsmoke,whichmightindicatethedangeroffire.1.[A]although[B]as[C]but[D]while2.[A]above[B]unlike咋学APP考研必备｜看精华｜听微课｜做真题｜官方网站：www.zaxue100.com[C]excluding[D]besides3.[A]limited[B]committed[C]dedicated[D]confined4.[A]catching[B]ignoring[C]missing[D]tracking5.[A]anyway[B]though[C]instead[D]therefore6.[A]evenif[B]ifonly[C]onlyif[D]asif7.[A]distinguishing[B]discovering[C]determining[D]detecting8.[A]diluted[B]dissolved[C]dispersed[D]diffused9.[A]when[B]since咋学APP考研必备｜看精华｜听微课｜做真题｜官方网站：www.zaxue100.com[C]for[D]whereas10.[A]unusual[B]particular[C]unique[D]typical11.[A]signs[B]st...
