試題詳解

37. The main purpose of the article’s third paragraph is to _____.
(A) illustrate how distinct speech streams increase the speed of language acquisition
(B) discuss the mechanism by which louder volumes of speech impede language acquisition
(C) explain the role of the relative volumes of sounds on an infant’s ability to learn to process language
(D) provide scientific data that measure the improvement in language acquisition as the volume of the speech stream increases