3Dprintershavebeenar的精選

問題詳情：閱讀下面短文，把A—D四個句子填入文中空缺處，然後完成第5小題。3Dprintershavebeenaroundusforsometime.Thereisalotyoucandoandimagewitha3Dprinter.____1 AcompanyinChinahasrecentlyused3Dprinterstomakete...