The extinction of large prehistoric animals is noted to suggest that ______. By saying these figures are conservative (Line 1,

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问题 The extinction of large prehistoric animals is noted to suggest that ______.
By saying these figures are conservative (Line 1, Paragraph 3), Dr. Worm means that ______.

选项 A、fishing technology has improved rapidly
B、the catch-sizes are actually smaller than recorded
C、the marine biomass has suffered a greater loss
D、the data collected so far are out of date

答案C

解析 这个一道理解题。它说到现在海洋生物的总损失量是非常大的,需要保护。
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