原式=(x+2+x-2)(x+2-x+2)x
=2x×4x
=8．
Mrs. Smith isn’t here. She _______ to the station to meet her husband.
A. has gone B. has been C. goes
采用公允价值模式计量的投资性房地产，资产负债表日其公允价值小于原账面价值的差额通过（）科目核算。
A、营业外收入
B、资本公积
C、公允价值变动损益
D、其他业务收入
