【正确答案】 B

【答案解析】[听力原文]
   Russia has abolished the clock change to winter time. The measure was announced by President Medvedev who said the switch caused stress. From Moscow, here's Steve Rosenberg.  This autumn, clocks in the world's biggest country will not go back one hour. They'll remain on summer time for the rest of the time. President Medvedev has decreed it. According to the president, switching back and forth between summer and winter time is causing Russians stress and illness.