ACCorDing to thE First pArAgrAph, whAt EviDEnCE is thErE thAt Crows hAvE intErEstED pEoplE For A long timE
A．thE lArgE numBEr oF storiEs ABout Crows.
B．thE FrEquEnCy with whiCh Crows ArE sightED.
C．thE Amount oF rEsEArCh thAt hAs BEEn ConDuCtED on Crows.
D．thE EAsE with whiCh Crows ArE iDEntiFiED.