2. 外语
  3. The passage is chiefly about ______. Which of the following is true about the Navy underwater listening network?

The passage is chiefly about ______. Which of the following is true about the Navy underwater listening network?

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问题 The passage is chiefly about ______.
Which of the following is true about the Navy underwater listening network?
选项 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B、It has been replaced by a more advanced system.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.
答案A
解析
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