Phonemics intends to find out the sound system functioning in individual languages .
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Grammatical morpheme must be a bound morpheme. ()
Diachronic linguistics focuses on a particular phase in its development. ()
In speech sound production, lower part of the oral cavity are relatively stable and function as a foil to the upper part in its articulatory movements. ()
眼反射区的位置是在()。
A. 大脚趾顶端
B. 大脚趾末端
C. 大脚趾跟部
D. 从第三脚趾跟部两侧到第二脚趾跟部两侧