The mathematician Bruno was burned at the stake by the Church largely for supporting Copernicus'

theory, yet, a couple of centuries later, Copemican__________seemed harmless.  [ ]

A. speakers                      

B. advocates  

C. writers                        

D. theorists

教育过程中由物质、文化和社会关系等要素组成的教育教学环境称为( )。

A．综合课程

B．学科课程

C．活动课程

D．隐性课程