The passage is chiefly about______. It can be inferred from the passage that______.

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问题 The passage is chiefly about______.
It can be inferred from the passage that______.

选项 A、new radio devices should be developed for tracking the endangered blue whales
B、blue whales are no longer endangered with the use of the new listening system
C、opinions differ as to whether civilian scientists should be allowed to use military technology
D、military technology bas great potential in civilian use

答案D

解析 根据文章标题应选择D。
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