TOEFL Reading: ETS-TOEFL阅读机经 - H937JU3QZ1PSWY6YL$

According to paragraph 3, in some species, young birds do not copy songs from recordings because A. they learn to sing only by live interactions with other birds B. their ability to learn from recordings occurs later in life C. they can only learn the songs of the birds living in their area of woodland D. they can only learn songs from other birds of their own species