The eastern bluebird is considered the most attractive bird native of North America by many bird-watchers.

A．native

B．native with

C．native by

D．native to

鼠疫的流行病学特点包括（）

A.是由鼠疫杆菌引起的一种烈性传染病

B.是典型的呼吸道传染病

C.传染性强、病死率高

D.是我国法定甲类传染病之首，也是国际检疫传染病

E.不通过人与人之间传播