输血导致循环超负荷的主要原因是（）。

A.输入大量血小板

B.输血速度过快

C.输入大量红细胞

D.输血次数多

E.输入大量全血/血浆

As we have known from the map of the woad, 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