单项选择题

A．Birds have to be taught to navigate.
B．A bird that has been caged will not.
C．Some birds cannot fly at night.
D．Some birds seem instinctively to follow the stars when flying at night.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Because he wanted to be a great actor.B．Because he wanted to be a playwright.C．Because he was too poor to live on.D．Because he wanted to take care of horses.
A．Because he wanted to be a great actor.
B．Because he wanted to be a playwright.
C．Because he was too poor to live on.
D．Because he wanted to take care of horses.
单项选择题
A．Relaxing at the seashore.B．Visiting her parents.C．Sailing on a boat.D．Preparing for a race.
A．Relaxing at the seashore.
B．Visiting her parents.
C．Sailing on a boat.
D．Preparing for a race.
相关试题