As we have known from the map of the world, this is ______.

A．twice as large an island as that

B．twice as larger as that island

C．as twice as that one

D．twice as a large island as that

请回答下图是采用哪种肝脏扫查方式（）

A.肝-下腔静脉纵切声像图

B.肝-腹主动脉纵切声像图

C.肝-胃纵切声像图

D.肝-胆囊纵切声像图