题目内容

Which of the following is a front vowel？

A. [i:]
B. [u:]
C. [a:]
D. [u]

查看答案

搜索结果不匹配？点我反馈

更多问题

nonprescription drug

The clear[l]and dark[l]are the______of the phoneme /l/.

A. phones
B. allophones
C. phonemes
D. morphemes

ethical drug

pharmacopoeia