应用英语教程视听说3U8教师用书.docx

Unit8 Space

Lead-in

Lead-in

1

e

h

f

a

j

d

i

c

g

b

2

orbit

proximity

weightlessness

radiation

capsules

extravehicular

crater

cosmologists

satellite

terraform

3

Key:

Becausehebelievesourplanetisthreatenedwithanever-expandingpopulationandonlyfiniteresources.Tosurvive,humans’colonizingnewworldsacrossthecosmosisimperative.

Open-ended.

Open-ended.

Script

ProfessorStephenHawkingisoneofthegreatestcosmologists.DiagnosedinhistwentieswithaprogressivemotorneurondiseaseorLouGehrig’sdisease,hewasalmostentirelyparalyzedandcouldonlycommunicateusingaspeechsynthesizer.ButwhenProfessorHawkingspeaks,theworldlistens.“Ifearforourfuture,ourplanet,Earthisthreatenedwithanever-expandingpopulationandonlyfiniteresources.WeneedaPlanB.Ifourspeciesistosurvivethenexthundredyears,letaloneathousand,itisimperativewevoyageoutintotheblacknessofspacetocolonizenewworldsacrossthecosmos.TheISSispioneeringspaceexploration.Withoutthisknowledge,travelintodeepspaceisimpossible.Within50years,IhavenodoubttherewillbesettlementsontheMoonandbytheendofthecenturyItrulyhopehumanswillbelivingonMars.IthinktheworkontheISSwilltakeanewgenerationofhumanspaceexplorersoutintooursolarsystemandbeyond.”

LearningtheSkills

LearningtheSkills

Pretest

Key:

No,it’sataskseveralordersofmagnitudemorecomplicatedthananythingattemptedpreviously.TerraformingswathsofMartianlandwouldbeaherculeaneffortduetogeographicalconsiderations.

TocolonizetheMooninsteadofMars.

(1)ThedistancefromtheMoontotheEarthisshorter.

Abaseorcolonycouldsequesterusawayfromthesolarflux,offeringprotectionfromtheradiation,extremeshiftsintemperature,andoccasionalimpactsthatplaguethesurface.

TheMoonhasamultitudeofcraters,whichwouldcreateahuman-friendlyhabitatwheretemperature,pressure,andoxygencon