会员:密码:注册会员忘记密码?网站帮助我浏览过的资料
设为首页加入收藏夹加入QQ书签论坛
首页每天学英语背单词新概念走遍美国音标词汇语法研究生大学中学小学演讲考试听力有声圣经VOA儿童商务

您所在的位置: 大耳朵首页 > 听力资料 > 在线视听资料 >...> 2005年VOA慢速英语 > 11月份 > 正文

站内搜索:

大耳朵在线背单词,测你词汇量:
cholesterol/[kə'lestərɔl]/n.胆固醇
2005年VOA慢速英语special200511150041
AGRICULTURE REPORT - Protecting the Nation's ForestsBy Mario Ritter

Broadcast: Tuesday, November 15, 2005

I'm Steve Ember with the VOA Special English Agriculture Report.

The Forest Service is responsible for the forests on public lands in the United States. It supervises almost seventy-eight million hectares of forests, grasslands, rivers and lakes. It is an agency of the Department of Agriculture.

Forest Service officials say there are four major threats to forests and wild lands in America.

The first is the threat of fire and fuel. This year, forest fires have burned more than three million hectares of land. That is almost two times as much as the ten-year average.

Fires are a natural part of forest growth, but they can also threaten lives and property.


An airplane drops firefighting chemicals

Fuel is dead plant material and small plants that grow under tall trees. As much as forty-nine metric tons of fuel can build up on every hectare of forest floor.

The Forest Service estimates that up to one-fourth of the forests it supervises have dangerous levels of fuel. Sometimes foresters set controlled fires to remove the fuel. Other times the fuel must be cleared by hand.

Another threat to forests is from invasive species. These are non-native plants and animals that push out native kinds. They can cause a lot of economic damage. Some invaders are insects like the Asian longhorn beetle. Some are diseases like white pine blister rust. Others are plants like the fast-growing kudzu vine.

The Foreign Service has hundreds of experts who try to develop ways to deal with invasive species.

The agency says another threat to the health of wild lands is the loss of open space. It says over one hectare of forest or grassland is lost to development every minute.

Development also leads to the division of large natural areas into smaller ones. Many animals need wide open spaces. Also, building near wild lands increases the risk to homes from forest fires.

The fourth threat to public lands is what the Forest Service calls unmanaged recreation. People can hunt, fish and camp in many national forests. But careless use of motor vehicles and other actions can be destructive.

On November second, the Forest Service released a new rule on the use of motor vehicles on public lands. The rule requires each national forest to identify roads and paths that are open to motor vehicles. Vehicles will be banned from other areas. The ban, however, will not affect snowmobiles.

This VOA Special English Agriculture Report was written by Mario Ritter. Our reports are online at www.unsv.com. I'm Steve Ember.
共有0人向本资料提供了听力原文,其中被采用了0篇,当前有0篇待审批,有0篇未被采用! 查看明细>>
如果您有更好的听力原文,欢迎提供给大耳朵,如果被采用,您将获得20到100金币的奖励!
Google  热门:英语培训学校英语口语英语翻译英语学习
已有0位对此听力感兴趣的网友发表了看法
非常好 很好 一般 不好 很差
* 如果因您不良评论或重复评论导致评论被删,您将会被扣掉一定数额的金币。
* 您必须遵守《全国人大常委会关于维护互联网安全的决定》及中华人民共和国其他有关法律法规。
* 承担一切因您的行为而直接或间接导致的民事或刑事法律责任。
* 您发表的文章仅代表个人观点,与大耳朵网站无关。
* 大耳朵评论管理人员有权保留或删除其管辖评论中的任意内容。
* 您在大耳朵网评论系统发表的作品,大耳朵网有权在网站内转载或引用。
* 参与本评论即表明您已经阅读并接受上述条款。
11月份
高瞻远瞩
放眼全球
Google
热门:英语培训学校 英语口语 英语翻译 英语学习
图片新闻更多
推荐资源
经典学习方法更多>>
听力资料目录导航
听力测试 英语词汇 英语口语 考试英语 品牌英语 大学教材 其他教材 商务英语 广播英语 儿童英语
历年中考听力
初中中考模拟
历年高考听力
高考听力模拟
历年四级听力
历年六级听力
四级听力模拟
小学  初中
高中  四级
六级  考研
托福  GRE
星火记忆单词
用Mp3背单词
刘毅词汇记忆
情景英语口语
4+1听力口语
出国实用会话
英语口语8000句
新东方900句
美语听力与发音
ABC到流利口语
口译考试
剑桥考试
中高考考试
大学四六级考试
研究生考试
公共英语考试
英语专业考试
新概念 六人行
赖世雄 许国璋
走遍美国 越狱
疯狂英语 沛沛
语法讲座 动感
大山英语 探索
千万别学英语
大学英语听力
大学英语精读
全新版 21世纪
新视野 实用综
大学体验 新编
成人自考 step
Listen this way
广州版小学英语
广州版初中英语
剑桥少儿英语
朗文3L看听学
Goforit新目标
高中英语课本
进阶听说教程
商务英语300句
VOA商务英语
商业英语视频
中级商务英语
初级剑桥证书
新编剑桥英语
剑桥英语精华版
2007年VOA慢速
VOA中级美语
美国习惯用语
VOA流行美语
澳广播英语讲座
在线大学课堂
VOA视频节目
宝宝ABC
棒棒英语
哈哈美语
LittleFox儿歌
英语儿童故事
380英语小故事
1035个英语单词
updated Mon Oct 13, 2008
免责声明:本站只提供资源播放平台,如果站内部分资源侵犯您的权益,请您告知,站长会立即处理。
Copyright © 2003-2008 大耳朵英语  鲁ICP备05010808号