Once the notion of（）was taken into consideration, semantics spilled into pragmatics.

单项选择题（）act is the act performed by or resulting from saying something.

A.A locutionary
B.An illocutionary
C.A perlocutionary
D.A speech

单项选择题The great source of modification of the air stream is found in the（）cavity.

A.nasal
B.oral
C.lung
D.glottis

单项选择题Which of the following sounds is a voiceless bilabial stop?（）

A.[p]
B.[b]
C.[m]
D.[t]