Classification of vowels is made up of the following EXCEPT()

_______ is NOT included in the factors used in analyzing vowels。A.Position of the tongueB.

A ______ vowel is one that is produced with the front part of the tongue maintaining the h

A vowel is different from a consonant in English because ofA．absence of obstruction.B．pres

One of the contributions Searle has made is his classification of______act.A．locutionaryB．

Which of the following is a front vowel？A．[i:]B．[u:]C．[a:]D．[u]

Which of the following is a back vowel？A．[i:]B．[i]C．[a]D．[u]