单项选择题

A．Why species don’t avoid extinction by adapting.
B．Why species become extinct at the rate they do.
C．Why humans aren’t extinct.
D．How many species aren’t extinct.
<上一题 目录 下一题>
热门 试题

单项选择题
A．He enjoyed using it. B．He left it in the taxi. C．He left it at the airport. D．He lost it on his trip.
A．He enjoyed using it.
B．He left it in the taxi.
C．He left it at the airport.
D．He lost it on his trip.
单项选择题
A．There was much more disorder. B．This time the electricity supply failed. C．It was quite unexpected. D．It came in the cool autumn.
A．There was much more disorder.
B．This time the electricity supply failed.
C．It was quite unexpected.
D．It came in the cool autumn.
相关试题