题目

At first glance, there is nothing unusual about the BingoBox store — shelves stacked with snacks line the walls, tempting passers-by through the glass windows. But on closer inspection, BingoBox is no ordinary store. The door opens only after customers scan a QR code to enter, and there is no cashier to tally up purchases —just a lone checkout counter in a corner. The Shanghai-based company is one of many unmanned store operators opening outlets all over China, hoping to improve slim profit margins in the retail business by reducing staff costs.“If capital costs rise quickly, that puts g— I’m afraid I can’t finish the book within this week.           —______. A. Please go ahead            B. That’s right       C. Not at all      D. Take your time