Some of the scientists held the point    （）           the book said was right.

题目解析[填写题目解析]： 答案：D 解析：根据句子结构，空格前后的内容是“Some of the scientists held the point...the book said was right”，其中“the book said was right”是对“the point”的说明，意思是“书中说的是正确的”，所以应该选择一个关系代词来引导这个说明。选项D“that; what”表示“书中说的是对的”，符合句子语法和语义。