人教必修五unit3-i-have-seem-amazing-things课文精讲(批注版)

IHAVESEENAMAZINGTHINGSMyfirstvisitwastoaspacestationconsideredthemostmoderninspace.Describedasanenormousroundplate,itspinsslowlyinspacetoimitatethepulloftheearth'sgravity.Insidewasanexhibitionofthemostup-to-dateinventionsofthe31stcentury.Aguide(G)showedusaroundalongamoveablepath.G:===========================Goodmorningtoallourvisitorsfrom2008.Firstwe'regoingtoexamineoneofthelatestformsofcommunicationamongourspacecitizens.NNomoretypistsworkingonatypewriterorcomputer!Nomorepostageorpostcodes!Messagescannowbesentusingathoughtpad.Youplacethemetalbandoveryourhead,clearyourmind,pressthesendingbutton,thinkyourmessageandthenextinstantit'ssent.It'It’sstoredonthethoughtpadofthereceiver.It'squick,efficientandenvironmentallyfriendly.TTheonlylimitationisiftheuserdoesnotthinkhisorhermessageclearly,anunclearmessagemaybesent.Butwecannotblamethetoolsforthefaultsoftheuser,canwe?DuringtheexplanationIlookedatthepairofsmallobjectscalledthoughtpadsonatable.Theyjustlookedlikemetalribbons.Soordinarybutsopowerful!WhileIwasobservingthem,thepathmoveduson.G:===============================Andnowladiesandgentlemen,weareintheenvironmentarea.Peopleusedtocollectwasteindustbins.Thentherubbishwassenttobeburiedorburned,amIfight?(Wenodded.)Well,nowthere'sasystemwherethewasteisdisposedofusingtheprinciplesofecology.AAgiantmachine,alwaysgreedyformore,swallowsallthewasteavailable.Therubbishisturnedintoseveralgradesofusefulmaterial,suchasfertilizerforthefieldsandsoilfordeserts.Nothingiswasted,andeverything,evenplasticbags,isrecycled.Agreatidea,isn't'it?Istaredatthemovingmodelofthewastemachine,absorbedbyitsefficiency.Butagainwemovedon.===========================G:Ourthirdstopshowsthechangesthathavehappenedtoworkpractices.Manufacturingnolongertakesplaceontheearthbutonspacestationslikethisone.Agroupofengineersprogrammerobotstoperformtasksinspace.Therobotsproducegoodssuchasdrugs,clothes,furniture,hoveringcarriages,etc.Thereisnowaste,nopollutionandnoenvironmentaldamage!However,thecompanieshavetotraintheirrepresentativestoliveandworkinspacesettlements.Theyhavetomonitortherobotsandtheproduction.Whenthegoodsarereadythey'retransportedbyindustrialspaceshipbacktoearth.Mymindbegantowander.WhatjobwouldIdo?MymotivationincreasedasIthoughtofthewonderfulworldofthefuture.