51. What is the primary purpose of this passage?
(A) To define inter-language switching.
(B) To ban inter-language switching among bilingual children.
(C) To promote inter-language switching among bilingual children.
(D) To introduce inter-language switching.
(A) To define inter-language switching.
(B) To ban inter-language switching among bilingual children.
(C) To promote inter-language switching among bilingual children.
(D) To introduce inter-language switching.
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統計: A(7), B(3), C(41), D(304), E(0) #1600109
統計: A(7), B(3), C(41), D(304), E(0) #1600109