2. 外语
  3. The future survival of the bald eagle is still an important American ecological concern.

The future survival of the bald eagle is still an important American ecological concern.

admin2010-01-14  59
问题 The future survival of the bald eagle is still an important American ecological concern.
选项 A、migration
B、population
C、existence
D、evolution
答案C
解析
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