问题描述：
求助各位大神~~TPO11 阅读19题 怎么分析谢谢了,大神帮忙啊
C选项 The higher frequencies of the begging cheeps of ground-nesting warblers are an adaptation to the threat that ground-nesting birds face from predators.与文中那句话对应呢?
C选项 The higher frequencies of the begging cheeps of ground-nesting warblers are an adaptation to the threat that ground-nesting birds face from predators.与文中那句话对应呢?
问题解答：
我来补答展开全文阅读