70. Based on the information in this passage, what would be an effect of lexical phrases on language learners?
(A)The use of lexical phrases has an effect on learners’ oral proficiency.
(B) Lexical phrases have an effect on learners’ expertise of formulaic chunks.
(C) Lexical phrases affect language learners’ functional uses of unanalyzed units.
(D) The use of lexical phrases is dead ends for language learners.