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 large as that one

D. twice as a large island as that

某个中等城市发生了鼠疫疫情并有扩散趋势，应定为＿级突发公共卫生事件（）。

A.Ⅳ级一般突发公共卫生事件

B.Ⅲ级较大突发公共卫生事件

C.Ⅱ级重大突发公共卫生事件

D.Ⅰ级特别重大突发公共卫生事件

E.无法定级