·you will hEAr pArt oF A BusinEss nEgotiAtion BEtwEEn mr. mitChEll AnD mADAm li.·For EACh quEstion 23—30, mArk onE lEttErA,
B、or
C、For thE CorrECt AnswEr.·you will hEAr thE rECorDing twiCE. whAt woulD BE mr. mitChEll’s mAin ConCErn Among thE proDuCts in thE CAtAloguE
A、

A、DyEstuFFs.

B、

B、 insECtiCiDEs.

C、

C、AgroChEmiCAls.