单项选择题

Certain species disappeared or became （）as new forms arose that were better adapted to the Earth's changing environment.

A．feeble
B．extinct
C．massive
D．extinguished

<上一题 目录 下一题>
热门 试题

单项选择题
There was once an（）idea that the earth was fiat and motionless.

A．absurd
B．intrinsic
C．eternal
D．offensive
单项选择题
Frankly speaking, your article is very good except for some （）mistakes in grammar.

A．obscure
B．glaring
C．trivial
D．rare
相关试题