2014年职称英语考试综合类b级名师课堂：预测点题阅读理解（一）

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1、预测点题阅读理解（一）本课知识点：1.文章背景分析2.文章和题目讲解3.知识点助记SpacinginAnimalsFlightDistanceAnyobservantpersonhasnoticedthatawildanimalwillallowamanorotherpotentialenemytoapproachonlyuptoagivendistancebeforeitflees.“Flightdistance'sthetermsusedforthisinterspeciesspacing.Asageneralrule，thereisapositiverelationshipbe

2、tweenthesizeofananimalanditsflightdistance—thelargertheanimal,thegreaterthedistaneeitmustkeepbetweenitselfandtheenemy.Anantelopewillfleewhentheenemyisasmuchasfivehundredyardsaway.ThewalIlizard’sflightdistance，ontheotherhandisaboutsixfeet.Flightisthebasicmeansofsurvivalformobilecreatures.Critica

3、lDistanceCriticaldistanceapparentlyispresentwhereverandwheneverthereisaflightreaction.“Criticaldistance”includesthenarrowzoneseparatingflightdistancefromattackdistance.Alioninazoowillfleefromanapproachingmanuntilitmeetsabarrierthatitcannotovercome.Ifthemancontinuestheapproach，hesoonpenetratesth

4、elion’scriticaldistance,atwhichpointthecorneredlionreversesdirectionandbeginsslowlytostalktheman.SocialDistaneeSocialanimalsneedtostayintouchwitheachother.Lossofcontactwiththegroupcanbefatalforavarietyofreasonsincludingexposuretoenemies.Socialdistanceisnotsimplythedistaneeatwhichananimalwilllos

5、econtactwithhisgroup—thatis，thedistanceatwhichitcannoIongersee,hear，orsmellthegroup—itisratherapsychologicaldistance，oneatwhichtheanimalapparentlybeginstofeelanxiouswhenheexceedsitslimits.Wecanthinkofitasahiddenbandthatcontainsthegroup.Socialdistancevariesfromspeciestospecies.ltisquiteshort—app

6、arentlyonlyafewyards—amongsomeanimals,andquiteIongamongothers.SociaIdistanceisnotalwaysrigidlyfixedbutisdeterminedinpartbythesituation.WhentheyoungofapesandhumansaremobilebutnotyetundercontroIofthemother'svoice,socialdistancemaybethelengthofherreach.Thisisreadilyobservedamongthebaboonsinazoo.Wh

7、enthebabyapproachesacertainpoint,themotherreachesouttoseizetheendofitstaiIandpullitbacktoher.Whenaddedcontrolisneededbecauseofdanger,sociaIdistanceshrinks.Toshowthisinman,onehasonlytowatchafamilywithanumberofsmallchildrenholdingha