英语听力精选进阶版 16544（在线收听）

"Business Matters: Black Friday fever 29 Nov 14

Sat, 29 Nov 14

Violence breaks out in the US and UK and websites struggle to cope as Black Friday fever grips shoppers. We ask a behavioural psychologist exactly what prompts us to act in this way. Meanwhile, Walmart staff in the US stage a massive Black Friday strike. We discuss the new lift technology that could take elevators to previously undreamt-of heights. And we explore the so-called 'sharing economy' in the Netherlands - a website where thousands of people sign up to let people borrow everyday items like a drill or ladder. And, as the teaser trailer for the new Star Wars movie premiers, we ask how crucial the latest instalment is to the continued success of an already huge brand franchise. We're joined throughout the programme by Robert Miliken, Australia correspondent for The Economist, in Sydney.