(单选题)

Why did the rate of ship accidents still increase after the invention of sonic radars?

A.cause captains seldom used them.
B. Because the radars failed to work properly.

B.Because captains depended on them too much.

C.Because the ships couldn’t detect nearby obstacles.

参考答案：C

参考解析：

细节理解题。根据文章第四段最后一句“Captains sailed faster, thinking they could get away with it thanks to the new safety technology”可知，发明声学雷达后，事故率反而增加了，原因是船长们认为有了新的安全技术就可以逃脱事故，所以航行得更快了。故选C。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语