Spacetravelisnothingnew.Thefirstspacecraftwithahumanwassentupintospacein1961.Sincethenpeoplehavenotonlytraveledtospacebutalsomanyofthemhavelivedthereinspacestationsforsometime.TheSovietUnion(前苏联)sentth
Spacetravelisnothingnew.Thefirstspacecraftwithahumanwassentupintospacein1961.Sincethenpeoplehavenotonlytraveledtospacebutalsomanyofthemhavelivedthereinspacestationsforsometime.
TheSovietUnion(前苏联)sentthefirstspacestationintospacein1971.ThisspacestationwascalledSalyut1.Salyut1wasdesignedasaplacewherepeoplecouldlivewhiletheyobservedspaceanddidexperiments.Thefirstgroupofastronautslivedtherefor23days.TheSovietUnionwentontomakesevenmoreSalyutspacestations.AtaboutthesametimetheUnitedStatesbuiltitsownspacestationcalledSkylab.
Astronautsvisitedandoftenlivedinthesespacestationsforashorttime.Howeveritwasn’tuntilthelate1980swhenTheSovietUnionsenttheMirspacestationthatpeoplebegantoliveinspaceforalongertime.Mirstayedinspacefrom1989until2001whenitwasdecidedthatthespacestationwastoooldandnolongersafetolivein.
Livinginspacestationsseemstobefunbutastronautsfacemanyproblems.Oneofthemisfood.AllthemealsonspacestationareputtogetheronEarthandsenttherebyspaceshuttle.Becausethefoodhastolastalongtime(sometimesuptothreemonths)alotofithastobestoredincans.Thespacestationdoesnothaveafridgebutithasacoolroomtokeepfruitandvegetablesfresh.Astronautsalsoeatmanyotherfoodssuchasdriedmeatthatdonotneedspecialcare.
Withoutthehelpofgravitysittingdowntoeatcanbetough.Astronautssometimeshavetofixthemselvestothewallwhileeating.Theyalsohavetobeverycarefultothatfooddoesnotfloataway.
1.Whichofthefollowinghastheclosestmeaningtotheunderlinedword“observed”inParagraph2?
A.Discovered B.Checked C.Watched D.Fixed
2.Whatcanweinfer(推断)fromthepassage?
A.Astronautscanneverhaveachancetoeatfreshfoodwhentheyliveinspacestation.
B.TheSovietUnionsentatotalof9spacestationsintospaceinthe1970sand1980s.
C.AstronautscouldliveintheMirspacestationfornomorethanthreeweeks.
D.Spacetravelhasquitealonghistoryofmorethan60years.
3.Whatisthebesttitleofthispassage?
A.ExploringSpace B.SpaceTravel