单选题 Which of the following is true about the U.S. Navy underwater listening network?.

A、 It is now partly accessible to civilian scientists.
B、 It has been replaced by a more advanced system.
C、 It became useless to the military after the cold war.
D、 It is indispensable in protecting endangered species.

【正确答案】 A

【答案解析】根据文章第三段中的“．．．as the Navy starts to share and partly uncover its global network of underwater listening system．．．”可以看出，军用设备并没有完全向"civilian scientists"开放，所以[A] 符合题意。