39. (A) into (B) by (C) from (D) on

39.
(A) into
(B) by
(C) from
(D) on

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46. Which of the following about the effect of hormones is not true? (A) The presence of androgens increases the mass of the vocal folds, thus lowering a person's vocal pitch. (B) Voice pitch declines with aging. (C) Changes in progesterone levels lead to tissue dryness prior to menstruation. (D) Studies show that the use of oral contraceptives change women's vocal quality drastically.

39.
(A) into
(B) by
(C) from
(D) on

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