一、摘要导写Readthetextagainandanswerthefollowingquestions.1.Whendidtheplantexplorationbeginonalargescale?2.Whoplayedanimportantroleinplantexploration?1.Itwasnotuntiltheeighteenthandnineteenthcenturiesthattheplantexplorationbeganonalargescale.2.Somemissionariesandplantcollectors.3.Whatwasthere...

时间:2024-11-20 09:37栏目:中学教育