One element in the description of vowels is the part of the tongue which is at the highest point in the mouth. A second element is the __________ to which that part of the tongue is raised.
出自:信阳师范学院-英语语言学

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块