2019高考英语完形填空提升练 精编优选练三十 ---精校解析Word版

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1、精编优选练(三十)　完形填空——说明文(限时：35分钟)A(2018·黑龙江哈尔滨六中三模)NewgeneticanalysishasrevealedthatmanyAmazontreespeciesarelikelytosurvivehumanmadeclimatewarminginthecomingcentury,contrarytopreviousfindingsthattemperatureincreaseswouldcausethemtodieout.Astudy,__1__inthelatestedit

2、ionofEcologyandEvolution,revealsthe__2__ageofsomeAmazoniantreespecies—morethan8millionyears—and__3__showsthattheyhavesurvivedpreviousperiodsaswarmasmanyoftheglobalwarmingimaginedperiods__4__fortheyear2100.Theauthorswritethat,havingsurvivedwarmperiodsinthepast,

3、thetreeswill__5__survivefuturewarming,providedtherearenoothermajorenvironmentalchanges.__6__extremedroughtsandforestfireswillimpactAmazoniaastemperatures__7__，thetreeswillstandthedirectimpactofhighertemperatures.Theauthors__8__thataswellasreducinggreenhousegas

4、emissionstominimizetheriskofdroughtandfire,conservationpolicyshouldremain__9__onpreventingdeforestation(采伐森林)foragricultureandmining.Thestudydisagreeswithotherrecentresearcheswhichpredictedtreespecies'extinctions__10__relativelysmallincreasesinglobalaverageair

5、temperatures.StudycoauthorDrSimonLewis(UCLGeography)saidthe__11__weregoodnewsforAmazontreespecies,butwarnedthatdroughtandoverexploitationoftheforestremainedmajor__12__totheAmazon'sfuture.DrLewissaid,“Thepastcannotbecompareddirectlywiththefuture.Whiletreespecie

6、sseemlikelyto__13__higherairtemperaturesthantoday,theAmazonforestisbeingtransformedforagricultureand__14__，andwhatremainsisbeingdegraded(使恶化)bylogging(伐木),andincreasinglysplitupbyfieldsandroads.”“Specieswillnotmoveasfreelyintoday'sAmazonastheydidinpreviouswarm

7、periods,whentherewasnohuman__15__.Similarly,today'sclimatechangeisextremelyfast,makingcomparisonswithslowerchangesinthepast__16__.”“Withaclearer__17__oftherelativeriskstotheAmazonforest,we__18__thatdirecthumanimpacts—suchasforestclearancesforagricultureorminin

8、g—shouldremainakeypointofconservationpolicy.Wealsoneedmoreaggressive__19__toreducegreenhousegasemissionsinordertomakeminimumtheriskofdroughtandfireimpactsand__20__thefutureofmostAm