GRE Text Completion: OG/PP2-GRE填空OG/PP2 - KYHTW1P5Z9T1PV4LF

By about age eight, children's phonetic capacities are fully developed but still ____________; thus children at that age can learn to speak a new language with a native speaker's accent. A. plastic B. vestigial C. inarticulate D. unformed E. nascent F. malleable