2. 外语
  3. Some animals bred in zoos are being taken back to their natural habitat where their species may have______ or been endangered.

Some animals bred in zoos are being taken back to their natural habitat where their species may have______ or been endangered.

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问题 Some animals bred in zoos are being taken back to their natural habitat where their species may have______ or been endangered.
选项 A、died away
B、died out
C、died off
D、died down
答案B
解析 动词短语辨析 die away“渐弱，渐渐凋零”；die out“灭绝，逐渐消失，渐渐止息”；die off“相继死去直至死光”；die down“变弱，逐渐停止”。
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大学英语四级

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