4)、PeopleoftenthinkofbirdswhentheAudubonSocietyismentioned,because________.
选项:
a、thesocietydidalotinprotectingbirds
b、somebirdshadjoinedthesociety
c、thesocietyhadnointerestinbirds
d、allthemembersofthesocietywerepaintersofbirds