题目内容：
Monophthongs are made with no (____) or change of the speech organs, while a diphthong is a vowel sound in the pronunciation of which its quality(____), beginning as one vowel and ending as another.
参考答案：
选择题：Monophthongs are made with no (____) or change of
- 题目分类：乐山师范学院英语语音
- 题目类型：选择题
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(____), beginning as one vowel and ending as another.