题目

 The house I grew up ________ has been taken down and replaced by an office building.  A. in it      B. in      C. in that       D. in which 答案：B  本题考查定语从句。The house ( which / that I grew up in ) , 主语后面紧跟的是定语从句。单项式2 ×108t系数是（    ）