问题
选择题
Einstein's Theory of Relativity is so________that most of us can not understand it. [ ]
A. controversial
B. abstract
C. appropriate
D. universal
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Einstein's Theory of Relativity is so________that most of us can not understand it. [ ]
A. controversial
B. abstract
C. appropriate
D. universal
答案：B