Speech（）refers to any distinguishable form of speech used by a speaker.

单项选择题That the speakers try to convey conversational implicatures and hearers are able to understand them is called（）of implicature.

A.canccllability
B.calculability
C.non-detachability
D.non-conventionality

单项选择题The objection to the development of Chile’s tourism might be all EXCEPT that it（）

A. is ambitious and unrealistic.
B. is politically sensitive.
C. will bring harm to culture.
D. will cause pollution in the area.