![Dogswillrefusefoodofferedbypeoplewhohaverefusedtohelpth...]( "Dogswillrefusefoodofferedbypeoplewhohaverefusedtohelpth...")
- 问题详情：Dogswillrefusefoodofferedbypeoplewhohaverefusedtohelptheirowners,someresearcherssaidlastFriday.Thestudyledbytheresearchersshowedthatdogshavetheabilitytoco-operate(合作)socially-anabilityfoundinasmallnumberofspecies,includinghumansandsomeother...
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