B               

题目分析：考查固定句型。句意：你认为谁是我们这个城市最富有的人？1.Do you think 后跟特殊疑问句变化问题Do you think she is a student ? 句子是正确的宾语从句。2.Do you think who you are ? （ do youthink + 特殊疑问句情况这种也是think 的宾语从句）3 .Who do you think you are ?你以为你是谁 中间的do you think 应该是插入语 正常语序是 do you think who you are 4.think，guess，suggest，suppose，hope，say，believe，imagine等这些词，后面要是跟宾语从句 都要用   特殊疑问词+ do you think + 陈述语序 固定搭配 是正确的

考点 : 考查固定句型