英语听力精选进阶版 16839（在线收听）

WBR: Wall Street Update 06 Jan 15

Tue, 6 Jan 15

The falling oil price cast a shadow over trading again today as Joe Saluzzi from Themis Trading in New Jersey explains in our market report. Plus, why 2015 will be longer than last year - by a whole second. Professor Tim O'Brien from Jodrell Bank Observatory in the UK on the need for a 'leap second'.