2013年高考英语一轮复习课时作业14 unit 4 astronomy the science of the stars 新人教版必修3（广东专用）

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1、课时作业(十四)　[必修3　Unit4　Astronomy：thescienceofthestars][限时：20分钟]　　　　　　　　　　　　　　　　　　　Ⅰ.阅读理解SurfaceExploration.Robotsmakegreatexplorersonplanets，moons，andotherlandingareas.Asidefromearth，justabouteverysurfaceinthesolarsystemisunsafeforhumanstoexplore.Theaironmostotherplanetsisinsufficientforhumans

2、tobreathe，makingitnecessarytowearaspacesuitandoxygenequipment.Thetemperaturesonthesesurfacesaremuchtoohotormuchtoocoldforanyhumanstowithstand.Plustherewouldbecomplicationswithradiation，weather，andalackofgravity.Robotshavemuchlesslimitationintheseareasandcansurvivemuchlongerundertheseconditi

3、ons.DataCollection.Robotsaredesignedforcollectingscientificdata.Robotsarealsoabletoperformmanytasksatonetimeandcanprocessinformationmuchquickerandmoreefficiently.Importantscientificprojectsfromdetectingminerals，analyzinggroundsamples，andfindingwaterareallperformedmuchquickerandaccurately(精确

4、地)byrobots.CostEffective.Theuseofrobotshasmadethecostofspaceexplorationmuchlessexpensivethanitwouldcostforhumanstodothework.Inordertosuccessfullysendhumansintospacewewouldneedtobuildavehiclethatcannotonlycarryhumans，butalsoenoughfoodandwatertokeepthemaliveforthedurationofthetrip.Moreover，ro

5、botshavenoproblemsworkingforhoursonend.Robotsnevercomplain，theydon'trequirefoodorwater，andtheyneverneedabathroombreak.SpaceTravel.Overthepast30yearsorsotherehavebeenmanydifferenttypesofrobotsusedsuccessfullyintheexplorationofspace.PerhapsthemostfamousandsuccessfulrobotsaretheSpiritandOpport

6、unitywhohavebothbeenexploringthesurfaceofMars.TheyhavebothbeenverysuccessfulwithexperimentsonsoilandrocksandhaveevenfoundevidenceofwaterinMars'history.1．Accordingtothepassage，whichofthefollowingisNOTtrue?A．Theuseofrobotsinspaceexplorationcostsmorethantheuseofhumans.B．Itmaybedangerousforhuma

7、nstoexplorethesolarsystemexcepttheearth.C．BoththeSpiritandOpportunityhavefoundtheevidenceofwaterintheMars.D．Manydifferenttypesofrobotshaveexploredthespacesuccessfully.2．Whichcolumncouldthepassagecomefrom?A．Education.B．Finance.C．Travel.D．Science.3.Theunde