Newton was one of the greatest scientists ____ever lived.

题目

Newton was one of the greatest scientists ____ever lived.
Newton was one of the greatest scientists ____ever lived.
A.whom B.which C.what D.that
为什么选D,而不选B

答案

先行词是人（ SCIENTIST）,引导词作主语,故只有D对 , 引导词是物时才能和B呀
句子意思是“牛顿曾经是在世的最伟大的科学家之一‘