Lostwalletswhichcontainapictureofababyaremorelikelytobe...
问题详情：Lostwalletswhichcontainapictureofababyaremorelikelytobereturnedtotheirowners,scientistshavediscovered. Researchersleft240walletsonthestreetsofEdinburghlastyeartoseehowmanywerereturnedtoth...