单项选择题

The experiment with the dove indicated that______.

A．birds have to be taught to navigate
B．a bird that has been caged will not fly long distances
C．some birds cannot fly at night
D．some birds seem to follow the stars when they fly at night
<上一题 目录 下一题>
热门 试题

单项选择题
According to Janis, the working time in the future will be______.
A．longer
B．flexible
C．fixed
D．shorter
单项选择题
While fully employed, men look for______.
A．visual entertainment that requires imagination in their leisure
B．opportunities to create either with their hands or with their minds in their leisure
C．something that will help them relax in their leisure
D．creative hobbies in their leisure
相关试题