.He is a new comer in the team, but I have the______ that I have seen that man before.

A．decision

B． situation

C．impression

D．position

环节动物与节肢动物的相似之处是 [ ]

A．体表外有外骨骼

B．身体分部

C．身体由许多体节构成

D．靠体壁进行气体交换