单项选择题
A．without air pollution B．of water C．and tidy D．and beautiful
A．Birds hardly pay attention to their young. B．Baby crocodiles can look after themselves well. C．Some dinosaurs took care of their young. D．Birds and crocodiles take good care of their youn
A．the tools made by "Flores Human" B．the language used by "Flores Human" C．the evolution of "Flores Human" D．the major surprising findings about "Flores Human"