·you will hEAr A tAlk prEsEntED By A rEportEr. this tAlk is ABout DECEptivE pACking.·For EACh quEstion 23—30 mArk onE lEttErA,
B、orC、For thE CorrECt AnswEr.·AFtEr you hAvE listEnED onCE, rEplAy thE rECorDing. ACCorDing to thE rEportEr mAnuFACturEr inCrEAsEs thE unit priCE oF his proDuCt ______.
A、

A、By ChAnging his pACkAgE sizE

B、

B、By improving thE quAlity

C、

C、At his will