Researchers who taught a gorilla named Koko to use sign language found that through age 5 her vocabulary was ________ the spoken vocabulary of a human 5-year-old and was ________ than the vocabulary of a deaf 5-year-old child using sign language.
A) smaller than; larger than
B) smaller than; about the same as
C) about the same as; larger than
D) smaller than; smaller than

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The Answer of Researchers who taught a gorilla named Koko to use sign language found that through age 5 her vocabulary was ________ the spoken vocabulary of a human 5-year-old and was ________ than the vocabulary of a deaf 5-year-old child using sign language.
A) smaller than; larger than
B) smaller than; about the same as
C) about the same as; larger than
D) smaller than; smaller than

Researchers Who Taught a Gorilla Named Koko to Use Sign