The definition "the act of using, or promoting the use of, several languages, either by an individual speaker or by a community of speakers" refers to

A．class is still defined by its own habits and attitudes.
B．class would refer to something more subtle than money.
C．people from different classes may have the same habits or attitudes.
D．income is unimportant in determining which class one belongs to.

A．They regarded the couple as an object of fun.
B．They expressed indifference towards the couple.
C．They were very curious about the couple.
D．They showed friendliness towards the couple.