题目

—What does the model plane look like?—Well the wings of the plane areof its body. A . more than the length twice B . twice more than the length C . more than twice the length D . more twice than the length 答案：C我国经济重心南移完成于（ ）A. 东汉时期 B. 两晋南北朝时期C. 隋唐时期 D. 两宋时期