单项选择题

The last sentence means that a knowledge of fish sounds can help man to （）

A．avoid confusion in fishing activity
B．avoid unneeded effort in fish sound studies
C．detect enemy submarines
D．pick up new sounds

<上一题 目录 下一题>
热门 试题

单项选择题
25（）

A．at
B．in
C．on
D．about
单项选择题
The first big, important step for an aspiring reporter is （）

A．editing his high school newspaper
B．writing a small news story
C．becoming a cub reporter
D．becoming a copyboy
相关试题