______ is meant that a conversational implicature is attached to the semantic content of what is said, not to the linguistic form.

A．He already knows how to play.
B．He doesn’t like to play games.
C．He doesn’t have a partner.
D．He doesn’t have enough free tim

A．many public institutions have to cut down enrollments of students
B．teachers are not qualified enough for satisfactory performance in classes
C．some institutions have to reduce the expenses on research
D．there is keen competition for resources and attention of faculty between public and private institutions