·you will hEAr A DiAloguE ABout golD priCE.
·For EACh quEstion (23-30), mArk onE lEttErA,B、orC、For thE CorrECt AnswEr.
·AFtEr you hAvE listEnED onCE, rEplAy thE rECorDing.

whiCh kinD oF CompAniEs ArE A proFitABlE BusinEssA．

A、CArs

B．

B、FooD

C．

C、nonE oF thEm