2020春英语必修4（人教版）习题：Unit+2+Working+the+land+解析

Unit2Workingtheland【导语】【导语】荷兰一所大学的农业研究员们在与月球和火星相荷兰一所大学的农业研究员们在与月球和火星相似的土壤中种上蔬菜，试图寻找帮助太空开拓者自己种庄稼的方法。似的土壤中种上蔬菜，试图寻找帮助太空开拓者自己种庄稼的方法。一起来看荷兰科学家是怎样在温室种太空蔬菜的吧。一起来看荷兰科学家是怎样在温室种太空蔬菜的吧。EstablishingahumancolonyontheMoonandtravellingtoMarshasbeenthestuffofdreamssincethedawnofthespaceage.Butthesevisionsfacemanyhurdles（障碍）（障碍）.Howcanhumanssurviveformonthsoryearsintheultra-hostile（极端恶劣的）（极端恶劣的）environmentofspace？What，forinstance，willtheyeat？AgriculturalresearchersataDutchuniversitysaytheyaretakingthefirststepstowardsprovidingananswer.TheyaregrowingvegetablesinsoilssimilartothosefoundontheMoonandMars，lookingforwaysofhelpingspacepioneersgrowtheirowncrops.“WhenpeoplegototheMoonandMarstheyalsohavetoeat，andit'seasiestforthemtogrowtheirownfood，”saidWiegerWamelink，surroundedbyseveraldozenplantsinaspecialgreenhouseatWageningen，anagriculturaluniversityincentralNetherlands.“WewantedtouserealMartianandlunarsoil，toseeifplantswouldactuallygrowinit，”Wamelinktoldreporters.Ofcourse，gettingreallunarandMartianpottings