【正确答案】
B
【答案解析】[听力原文] The Commerce Department said sales fell by 11.3% to a seasonally-adjusted annual rate of 355, 000 homes, down from a revised 400,000 in October. The fall reflects the extension of first-time buyer tax credits, which had become due in November. The total was far lower than analysts had expected, and the data wiped out early gains in shares on Wall Street. Home sales had been boosted by buyers looking to take advantage of the tax credit, but now that they have been extended to April, the incentive to buy has disappeared, analysts say. As a result, 'buyer traffic is likely to be flat until spring,' predicted Mark Vitner at Wells Fargo Securities. The median sales price for November was $217,000. What's the main reason for the dropping in new home sales? 本题问及销量下降的主要原因是什么。新闻指出，预计11月份到期的首次购买抵税的延长促使销售下降。B的prolonged tax policy与原文中the extension of first-time buyer tax credit同义，故为正确答案。A“国内产量下降”、C“美国GDP下降”和D“本国的经济衰退”都不是销量下降的原因。