Manhasinventedfourki的精选

问题详情：Manhasinventedfourkindsofsatellites.Thefirstkindofsatellitestudiesthe  1  oftheearth.Theyareusedtomakemaps.Theyalsohelpcountriestoseewheretheymay  2 oilorgold.Thesecondkindofsatelliteis...