辽宁省大连经济技术开发区得胜高级中学2019届高考必考点原创卷英语试题1（PDF版，无答案）

英语原创卷１　第１页 英语原创卷１　第２页 􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀤠 􀦠 􀦠 􀦠􀦠 ２０１９年高考必考点原创卷 英语卷１ 第一部分　听力略 第二部分　阅读理解(共两节,满分４０分) 第一节(共１５小题;每小题２分,满分３０分) 阅读下列短文,从每题所给的 A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项 涂黑. A Whydowehavefingerprints? Weallknowthatourfingerprintsaresouniquethatnotwopeoplehavethesameones,not evenidenticaltwins．Butwhydohumanshavetheseswirlypatternsontheirfingersinthefirst place? Formanyyears,scientiststhoughttheyweretheretohelphumanfingersgripthings．．． butitturnsout,fingerprintsactuallyallowlessofourskintocomeintocontactwithobjects thanperfectlysmoothfingertipswould．Sotheyhavenothingtodowithgripping．Whilethere areafewtheoriesabouttheevolutionarypurposesoftheseuniquepatterns,scientistshaven’t beenabletofigureoutadefinitiveexplanation． Whydowehaveadominanthand? We’resousedtohavingadominanthand,andidentifyingpeopleas“righties”or“lefties,” thatweprobablytakeitforgranted．Butwhenyoureallythinkaboutit,thefactthatwehave onehandwithsignificantlybetterfunctionalitythantheotherseemsabitodd．Giveneverything weknowaboutevolutionand“survivalofthefittest,”whyhaven’tweevolvedtohavetwo totallyadepthands?It’soneofthebiggesthumanbodymysteriesoutthere．Ofcourse,there aresomepeoplewhocanusebothhandswithequalskill． Whydoweyawn? We’vebeenyawningsincewewereinthewomb,andyetscientistsstillhaveyettofindan explanationforwhy wedoit．Whilethere’snoshortageoftheories,thetruereasonfor yawningremainsamystery．Onetheorysuggeststhatweyawntoregulatethetemperatureof ourbrains,sincesleepdeprivationorboredom cancauseourbraintemperaturetodrop． Anothersuggeststhatweyawntogiveourbodiesajolt,sinceourheartratestendtoincrease andoureyemusclestenseupafterweyawn．Maybebotharetrue． ２１．Whatdoweknowaboutfingerprints? A．Twinsmayhavethesamefingerprints． B．Fingerprintscanhelppeoplegripthings． C．Smoothfingerprintsallowmoreofour