As we drew closer, I could see a whale ____________ by a pack of about six other killers.

A．attacking

B．being attacked

C．attack

D．to attack

下列都属于活化石植物的是：（）。

A.银杏、水杉、银杉

B.银杏、油松、水杉

C.银杉、雪松、侧柏

D.红松、水杉、银杉