单项选择题

Effective communication between a dog and its owner is______.

A．essential to solving the dog's behavior problems
B．the foundation for dogs to perform tasks
C．a good way to teach the dog new tricks
D．an extreme measure in obedience training

<上一题目录下一题>

热门试题

单项选择题

Old is suddenly in (Line 1, Para. 1) most probably means______.

A．America has suddenly become a nation of old people
B．gerontology has suddenly become popular
C．Some elderly professors are found on American campuses
D．American colleges have realized the need of enrolling older students

单项选择题

The author's purpose in writing the passage is______.

A．to persuade young children not to worry about criticism
B．to stress the importance of positive reinforcement to children
C．to discuss the skill of combining criticism with encouragement
D．to teach young athletes how to avoid burnout