Longitudinal and transverse separtions between the tanks,which are used to prevent liquids from leaking from one double bottom tank into the other ,are called（）.

A.double bottoms

B.cofferdam

C.navigating bridge

D.superstructure

下列是从古诗“二月卖新丝，五月粜新谷。医得眼前疮，剜却心头肉”中读出的信息，其中错误的是（）

A.农民生活艰辛

B.土地兼并严重

C.农副产品进入流通领域

D.小农业和小手工业紧密结合