GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 4A6L4QPB845OZ7JDA

Researchers interested in the nature versus nurture debate use identical twins who were separated at birth to explore which personality characteristics are ____________ and which arise through experience. A. intractable B. nascent C. erudite D. innate E. predilection F. inborn