Dr. Petitto believes this theory and wants to prove it. Petitto박사는 이 학설을 믿고 이를 증명하길 원한다. ... Dr. Petitto studied the babies three times: at 10, 12, and 14 months. ... Dr.
UNIT 2. Issues in SocietyChapter 4. Language: Is It Always Spoken? 언어: 이것은 언제나 말로 표현되는가?Most of us know a little about how babies learn to talk. From..