考博考试

【单选题】 The main idea of the passage is ______.
A．the development of sonar technology
B．how to avoid ship and whale collision
C．the hot spots for whale collision
D．the giant creature of the sea

网考网参考答案：B
网考网解析：
本文主要讲了通过sonar technology避免船只与鲸鱼的碰撞以保护鲸鱼的安全，选项B符合文意。 查看试题解析出处>>