关于carefulobservationsa的百科

•  Thebookwaswritten　　　　carefulobservationsanddetailedstu...

• 问题详情： Thebookwaswrittencarefulobservationsanddetailedstudies.A.onthegroundof               B.onbehalfofC.onaverage                         D.onthebasisof【回答】D知识点：介词题型：选择题...
• 2021-08-2716143