关于棘皮动物的问题the mantle cavity evolve into a diffusion lung in a) pulmonateb) calms and muscles c) lamellibrachesd) limpets,whelkes,and cowries

关于棘皮动物的问题the mantle cavity evolve into a diffusion lung in a) pulmonateb) calms and muscles c) lamellibrachesd) limpets,whelkes,and cowries
关于棘皮动物的问题
the mantle cavity evolve into a diffusion lung in
a) pulmonate
b) calms and muscles
c) lamellibraches
d) limpets,whelkes,and cowries

关于棘皮动物的问题the mantle cavity evolve into a diffusion lung in a) pulmonateb) calms and muscles c) lamellibrachesd) limpets,whelkes,and cowries
吃海参吧,吃完就会了.