With the changes in the world’s climate, dinosaurs died, but many smaller animal

题干

With the changes in the world’s climate, dinosaurs died, but many smaller animals lived on．It was the of the fittest．

A．survival	B．distinction
C．existence	D．appearance

上一题下一题 0.65难度单项选择更新时间:2017-07-11 12:02:05

小学学科试题库

初中学科试题库

高中学科试题库