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．They carried passengers, but not cargo.B．They were large, but surprisingly fast.C．They were the first successful steam-powered ships.D．They were more reliable than other ships of the 1860’s.
A．They carried passengers, but not cargo.
B．They were large, but surprisingly fast.
C．They were the first successful steam-powered ships.
D．They were more reliable than other ships of the 1860’s.
单项选择题
A．Decide for himself what is best.B．Communicate his career hopes.C．Stop hindering his own progress.D．Look for another career.
A．Decide for himself what is best.
B．Communicate his career hopes.
C．Stop hindering his own progress.
D．Look for another career.
相关试题