— This book on idioms is interesting. I’d like        , where did you buy it, Simon?

—In the Amazon Bookstore,

A．it

B．this

C．that

D．one

以下哪项不是感染性心内膜炎的周围体征？（）

A.指和趾甲下线状出血

B.Osler结节

C.Roth斑

D.环形红斑

E.Janeway损害