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

how long hAs ForD BEEn prEpAring thE 2-minutE CommErCiAlA．

A、ABout onE yEAr

B．

B、two yEArs

C．

C、ABout onE AnD A hAlF yEArs