时间:2018-12-16 作者:英语课 分类:2007年VOA标准英语(六月)


英语课

By Paul Sisco
Washington, D.C.
29 June 2007
 


The American bald eagle, a national symbol since 1782, was once almost wiped out by hunters and pesticide 1 poisoning. Today the great bird is not only surviving but thriving. Four decades after it was declared endangered, the American bald eagle is off the Endangered Species List. VOA's Paul Sisco reports.






The American bald eagle


The American bald eagle



This is a momentous 2 week for America's bald eagles, and the legislation that has protected them. The country's national symbol is officially off the endangered species list.


Two hundred years ago upwards 3 of a half million eagles soared across American skies -- serving as an apt symbol of freedom and expansion for a rapidly growing nation.


But by 1963 only 400 nesting pairs remained in the lower 48 states, due to loss of habitat, hunting and the use of pesticides 4. The chemical DDT made eagle egg shells thin, resulting in nest loss. Congress eventually banned the dangerous pesticide and included the bald eagle on the Endangered Species Act of 1973. Now due to the protections the act provides, eagles are back in numbers sufficient to take them off the endangered species list.


"We're all excited about it. It is a great success story," says Deb Shaeffer of the National Audubon Society.






Ceremony at the Jefferson Memorial


Ceremony at the Jefferson Memorial



It is a development so exciting that federal officials and environmentalists marked the occasion with a ceremony at the memorial in Washington, D.C. dedicated 5 to the nation's third president, Thomas Jefferson.


"The eagle has returned,” said Interior Secretary Dirk Kempthorne. “It is my honor to announce the Department of Interior's decision to remove the American Bald Eagle from the endangered species list."


Recovery programs across the United States, many run by volunteers, have been a big part of this success story.






John Aiken


John Aiken



John Aikin operates a breeding program at the San Francisco Zoo. "I know more about the birds in this state,” says Aikin. “There were about 38 nesting when we started the program. Today, there are more than 200, so they are doing much, much better."


And nationwide, after decades of conservation efforts, there are now some 10,000 nesting pairs -- a 25-fold increase in the last 40 years.


Young and old took part in the ceremony in Washington. So did special guest, Challenger, a rescued bald eagle used to educate the public and cared for by the non-profit American Eagle Foundation.


"It's a big day, it's a long time coming and it's a big celebration,” says Foundation President Al Cecere. “It's taken over 30 years to protect the eagle. A lot of state, federal and private groups have been working coast to coast, all with passion and dedication 6, so it's a great day. Hopefully our national bird will fly strong and free for future generations."



1 pesticide
n.杀虫剂,农药
  • The pesticide was spread over the vegetable plot.菜田里撒上了农药。
  • This pesticide is diluted with water and applied directly to the fields.这种杀虫剂用水稀释后直接施用在田里。
2 momentous
adj.重要的,重大的
  • I am deeply honoured to be invited to this momentous occasion.能应邀出席如此重要的场合,我深感荣幸。
  • The momentous news was that war had begun.重大的新闻是战争已经开始。
3 upwards
adv.向上,在更高处...以上
  • The trend of prices is still upwards.物价的趋向是仍在上涨。
  • The smoke rose straight upwards.烟一直向上升。
4 pesticides
n.杀虫剂( pesticide的名词复数 );除害药物
  • vegetables grown without the use of pesticides 未用杀虫剂种植的蔬菜
  • There is a lot of concern over the amount of herbicides and pesticides used in farming. 人们对农业上灭草剂和杀虫剂的用量非常担忧。 来自《简明英汉词典》
5 dedicated
adj.一心一意的;献身的;热诚的
  • He dedicated his life to the cause of education.他献身于教育事业。
  • His whole energies are dedicated to improve the design.他的全部精力都放在改进这项设计上了。
6 dedication
n.奉献,献身,致力,题献,献辞
  • We admire her courage,compassion and dedication.我们钦佩她的勇气、爱心和奉献精神。
  • Her dedication to her work was admirable.她对工作的奉献精神可钦可佩。
学英语单词
'Alī Afghān
actualisms
agricultural machine
Ailuropodidae
alarm panel
area of critical definition
assembly of non-localized particles
asymptotic distribution of maximum likelihood estimator
ataxitic
avr
barrel saw
becky
benthia moriutii
bhalla
blitzstein
break make contact
callosal sulcus
callus
cereal leaf beetle
chain cable
cisgenic
co-angelical
coed crew
conveyor type veneer dryer
core type
DDCP
dedeuterizing
discharge deflector
droag
dust-borne infection
expansibility linear
extremity of an interval
floscular
fructuage
Geiger-Nuttall rule
Haldane's apparatus
hydrobromate
hypnum kushakuense
hypocenter computing process
insert maps
internuclear ophthalmoplegia
invisible government
Karambu
king roller
l.q
laps of luxury
lefve
little aden
Lugton
majorie
melon sleeve
mental processes
method for hydrogen ion concentration
moisture-retaining
Molieresque
mollitrichosiphum tenuicorpus
N-ACH
nivas
offset value
Oxykertschenite
ozone box
packet-mode dte
parasiege
Pirogoff's triangle
play-it-safe
pleau
poites
postoptimality problems
potassa sulfurata
potato tuberworm
PowerPointlessness
primo de rivera
radial extruding
radiological decay constant
real-time blackhole list
rectal reflexes
reserved bandwidth
rightanglepris
sandrin
Shikishima
Shotoku Taishi
skeesicks
splenius muscles
statistical function
staubhefe
subtrapezius
supervisual
suppurates
system specification diagram
take of
talf
tearing limit
threaded-rod
time cost trade-off
transmitting mode
Tsimanampetsotsa, Farihy
Tully's powder
tympanal flaccid part
water proof asphalt-felt
weathered iceberg
well survey
wilkenson