Einstein’s Theory of Relativity was so that few people could understand it at that time. A

问题补充：

Einstein’s Theory of Relativity was so that few people could understand it at that time.

A. controversial

B. religious

C. abstract

D. contradictory

答案：

A. controversial

B. religious

(答案→)C. abstract

D. contradictory

解析：考查形容词辨析。A有争议的；B虔诚的，宗教的；C抽象的；D矛盾的；句意：爱因斯坦的相对论是如此地抽象以至于在那时很少有人能够理解。根据句意说明C正确。