The extinction of large prehistoric animals is noted to suggest that ______. The author seems to be mainly concerned with most

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问题 The extinction of large prehistoric animals is noted to suggest that ______.
The author seems to be mainly concerned with most fisheries’ ______.

选项 A、management efficiency
B、biomass level
C、catch-size limits
D、technological application

答案D

解析 这是一道主旨题。本文中心是海洋生物量,文章所有内容都是围绕海洋生物量为什么减少、为什么需要保护以及如何保护展开的。
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