[00:02]A wetland acts like a sponge that can reduce flooding
[00:06]during heavy rains and the plants inside the wildlife
[00:09]habitat filter water runoff, improving water quality.
[00:15]In undeveloped social groups, we find very little
[00:18]formal teaching and training. These groups mainly rely
[00:22]for instilling needed dispositions into the young upon the
[00:26]same sort of association which keeps the adults loyal to
[00:34]The reason for its inquiry is that the BBC's royal
[00:37]charter runs out in 1996 and it must decide whether to keep
[00:42]the organization as it is, or to make changes.
[00:48]Many of my family members have died from
[00:50]preventable diseases. My mother died of lung cancer
[00:54]because she smoked. My brother died of HIV-related illness.
[01:02]About 4 billion American chestnut trees fell victim
[01:05]to a deadly fungus in the first half of the 20th century.
[01:10]Researchers have since bred what they hope are blightresistant
[01:15]trees, growing in national forests in North
[01:18]Carolina, Tennessee and Virginia.
[01:23]Our magazines feature beaming celebrities and happy
[01:26]families in perfect homes. And since these messages have an
[01:31]agenda-to lure us to open our wallets to make the very idea
[01:35]of happiness seem unreliable.内容来自 听力课堂网：http://www.tingclass.net/show-8124-240075-1.html