广东省广州市天河区2019高考英语二轮复习阅读理解及解析科普类06专题训练含解析

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1、阅读理解（科普类）06十四、Theideaofbeingabletowalkonwaterhaslonginterestedhumansgreatly.Sadly,biologicalfactspreventuseveracplishingsuchathingwithoutartificialaid_wesimplyweightoomuch，andallourmasspushesdownthroughourrelativelysmallfeet,resultinginalotofpressurethatmakesussink.However,severaltypesofan

2、imalscanwalkonwater.OneofthemostinterestingisthemonbasiliskBasilicusbasilicus，alizard(蜥蜴)nativetoCentralandSouthAmerica.Itcanrunacrosswaterforadistanceofseveralmeters,avoidinggettingwetbyrapidlyhittingthewater’ssurfacewithitsfeet.Thelizardwilltakeasmanyas20stepspersecondtokeepmovingforward

3、.Forhumanstodothis,we，dneedhugefeetthatwecouldbringuptoourearsinordertocreateadequatewhitting.’’Butfortunatelythereisanalternative：cornflour.Byaddingenoughofthismonthickeningagenttowater(anditdoestakealot)，youcancreatea“non-Newtonian”liquidthatdoesn’tbehavelikenormalwater.Now,ifthesurfaceo

4、fthewaterishithardenough,particles(粒子）inthewatergrouptogetherforamomenttomakethesurfacehard.Movequicklyenoughandputenoughforceintoeachstep,andyoureallycanwalkacrossthesurfaceofanadequatelythickLiquidofcornflour.Funthoughallthismaysound,it’sstillrathermessyandbetterreadaboutintheorythancarr

5、iedoutinpractice.Ifyoumustdoit,thenkeepthewaterwingshandyincaseyoustarttosink_andtakeashowerafterward!44.Walkingonwaterhasn’tbeearealitymainlybecausehumans______.A.arenotinterestedinitB.havebiologicallimitationsC.havenotinventedpropertoolsD.areafraidtomakeanattempt45.WhatdoweknowaboutBasil

6、icusbasilicusfromthepassage?A.Itislightenoughtowalkonwater.B.Itshugefeetenableittostayabovewater.C.Itcanrunacrosswateratacertainspeed.D.Itsuniqueskinkeepsitfromgettingwetinwater.46.Whatisthefunctionofthecornflouraccordingtothepassage?A.Tocreateathickliquid.B.Toturnthewaterintosolid.C.Tohel

7、ptheliquidbehavenormally.D.Toenablethewatertomoverapidly.47.Whatistheauthor’sattitudetowardtheideaofhumans’walkingonwater?A.Itisriskybutbeneficial.B.Itisinterestingandworthtrying.IC.tiscrazyandcannotbeeareality.D.Itisimpracticalthoughtheoreticallypossible.【考点】