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id alm ost 11 m illion A m ericans were out of work,about nine point eight percent(9.8% )of the work force.Almost 10 m illion persons in the U S were unemployed in M arch.That means nine per cent (9% )of the A merican labor forces was out of work,and increase of two tenths of one percent(0.2% )over February' srate. The Labor Departm ent reports that producer prices increased by only one
Half of one percent(0.5% )in October.
5、注重背景知识积累
听力理解包含许多因素，仅仅将听力难点归于语言知识的缺乏是不全面的。背景知识也是影响听力理解的重要因素之一。背景知识又叫已知知识，是进入一个新的学习环境时学习者所拥有的全部知识，这种知识可为其获取新知识提供潜在的联系。因此在获取新知识的时候，背景知识的积累是必不可少的。
V O A 新闻涉及的题材广泛，相应的背景知识可以帮助听者更好地理解新闻内容。新闻学上一般将背景分为四类：人物背景、地理背景、历史背景和事物背景。
5.1 人物背景
新闻报道中常常出现人名，而对这些人物背景知识的了解可以很快锁定新闻报道的相关内容。一般来说，新闻中提到presidentO bam a,prim e m inisterCam eron，secretary-generalBan K i-m oon 等等，如果知道他们是美国总统奥巴马，英国首相卡梅隆，联合国秘书长潘基文，那也不难想到这是则关于国际方面的新闻。
5.2 地理背景
地名、国名在新闻中也是必不可少的，对其主要地理知识及相关历史的了解能更好地理解新闻。比如此次日本福岛核爆炸，The situation in Japan is causing anxiety throughout A sia and the world. https://www.51lunwen.org/ It has caused a "run" on soy sauce in China,where som e think the salt in soy sauce could protectthem from exposure to radiation.中国沿海地区疯抢食盐，美国沿海地区抢购碘片等等的行为，联系它们地理位置，不难理解这些地区是因为担心核辐射而做出相应的措施。
5.3 历史背景
历史背景是了解事件发生起源的重要条件。比如South and North Korea blam ed each other for an exchange of gunfire Tuesday between naval patrol boats that resulted in heavy dam age to a North Korean vessel,but the incident seemed unlikely to escalate into further violence or affect diplomatic activities between the two countries and the U .S.“北方限界线”是朝鲜战争以后美韩单方面划定的海上界线，朝方不予承认。几十年来，朝军机及舰艇多次越过这一界线，朝韩磨擦不断，冲突时有发生。2010 年10 月29 日朝韩在边境非军事区交火，北方限界线也是争议的话题之一。
5.4 事务背景
如果不了解相关的事务背景，会对理解造成一定影响。比如：
The U nited States,N orway and Britain have called for talks to resume in Sudan so that plans can m ove ahead for the south's independence later this year. The southern Sudan People's Liberation Movement (SPLM ) called off talks with the K hartoum -based government on Saturday. It said the ruling National Congress Party (N CP),based in the north,has destabilized the south by arming rebelgroups.（V O A 2011/03/05）
这则新闻