2. 外语
  3. Each plant and animal by natural tendency, ______ far more seeds and eggs and seedlings and young, than is necessary to maintain

Each plant and animal by natural tendency, ______ far more seeds and eggs and seedlings and young, than is necessary to maintain

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问题 Each plant and animal by natural tendency, ______ far more seeds and eggs and seedlings and young, than is necessary to maintain ______ population.
选项 A、is to produce ... their
B、produces ... its
C、produces their
D、produce... their
答案A
解析
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