. Intelligence is to some extent one is born with A. thatB. of whichC. somethingD. which

问题补充：

. Intelligence is to some extent one is born with

A. that

B. of which

C. something

D. which

答案：

A. that

B. of which

(答案→)C. something

D. which

解析：to some extent 是插入语，可忽略。则该句是Intelligence isone is born with. One后面缺少先行词，故用代词something作先行词，省略关系代词that。选C。