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甘肃省定西市2022~2023学年度第二学期八年级期末监测卷(23-01-RCCZ13b)英语正在持续更新，目前2025衡水名师卷答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

that person.The neutral face was mostly ignored The gender or body type of whoever was wearing the dan gerous mask didn't much matter-the crows seemed to key in on the face.Researchers even put the mask upside down to see if the crows could still recognize it."For a brief moment,the crows seemed a little confused,and then they would just turn their head upside down and then they'd start an alarm-calling,Swift says. Even crows that hadn't been banded scolded l and dive bombed the wearer of the dangerous mask.Swift says this sug gests the crows "were actually learning from their peers that this particular person is dangerous". The researchers fed crows over the course of several days to