A-A+
The last sentence means that a knowledge of fi
问题详情
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
参考答案
正确答案：C
答案为C。根据第二段第三句及最后一句，He can also apply this information to the more effective utilization of the listening spots he has set up to detect enemy submarines... and the sound sentry must decide whether or not to call an alarm作出该项选择。
