His brain was just anyone’s with so rich experiences.
A.as full of knowledge as
B.full of as knowledge
C.so full of knowledge as
D.full of so much knowledge as
答案:A
as..as...与so...as...的区别在意思上它们是不一样的,在否定句中既可以用 not as ...as...也可以用 not so...as,而在肯定句中只能用as...as…,根据题意有如此丰富的经验,他的大脑就像任何人一样充满知识。故选A.