求动词+or的名词

名词有actorgovernorinventorconductorsupervisordetectorvisitorinfectoreditorsailortailortranslatorcollectorinstructordirectoroperatorprofessoradvisorcalculator，等等

My advisor suggested economics and accounting， but I am not really sure.

我的导师建议我学经济和会计，但我还真不能确定（学哪个）。