时间:2019-01-02 作者:英语课 分类:健康与环境


英语课

ENVIRONMENT REPORT - October 25, 2002: Chinook Salmon 1 Deaths


By Cynthia Kirk



This is the VOA Special English ENVIRONMENT REPORT.


American officials say at least twenty-thousand chinook salmon and other fish have died recently in the Klamath
River in Northern California. Scientists are not sure what caused the die-off. But environmental groups say the
Bush administration’s plan to redirect the flow of the river to provide water for crops may have caused water
levels to drop too low.


The Klamath River starts at Upper Klamath Lake in southern Oregon and flows into Northern California. Then
river flows west into the Pacific Ocean. Water management of the Klamath River has been a major dispute
between farmers on one side and fishermen, environmental groups and several Native American tribes on the
other side.


Six months ago, the Bush administration approved a plan to provide large amounts of water to farmers near the
Klamath River for irrigation. Farmers depend on water from the upper Klamath Lake to irrigate 2 more than
eighty-thousand hectares of land. Administration officials said the plan would satisfy farmers and honor
environmental laws. But opponents of the plan said it would severely 3 harm the river and its fish.


Several fishing groups and others have taken legal action against the federal government. They said the Bush
administration gave too much water to farmers for irrigation at the risk of thousands of salmon. Some of the
salmon, such as coho, are protected under the Endangered Species Act. However, chinook salmon do not have
federal protection. Chinook were the main victims of the recent fish kill.


Scientists disagree about what caused to the fish to die. Tests showed that most of the fish died of lack of oxygen
due to infections that damaged their gills. Scientists say the organisms that caused the infection are common in
the river. But rarely have the organisms led to so many deaths.


Some scientists say warm and dry weather last month and low water flows in the Klamath River could be major
reasons for the deaths. They say the river is too low for fish to move upstream to mate. They say the fish are
dying of disease because they are crowded into small areas of water.


Biologists have called for more water to be released into the river for at least six months. But so far, federal
officials have agreed only to two weeks of additional water flows.


This VOA Special English ENVIRONMENT REPORT was written by Cynthia Kirk.



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n.鲑,大马哈鱼,橙红色的
  • We saw a salmon jumping in the waterfall there.我们看见一条大马哈鱼在那边瀑布中跳跃。
  • Do you have any fresh salmon in at the moment?现在有新鲜大马哈鱼卖吗?
vt.灌溉,修水利,冲洗伤口,使潮湿
  • The farmer dug several trenches to irrigate the rice fields.这个农民挖了好几条沟以灌溉稻田。
  • They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。
adv.严格地;严厉地;非常恶劣地
  • He was severely criticized and removed from his post.他受到了严厉的批评并且被撤了职。
  • He is severely put down for his careless work.他因工作上的粗心大意而受到了严厉的批评。
学英语单词
a gentleman of the pad
accounting for estate income
acetylisable
adjaye
alclometasone
antidevolutionist
antienvironment
antitussin
Arteria obturatoria accessoria
assignment of interests
attending court trials
aversive learning
ballad-operas
Ban Non Nam
Bernedo
bilirubinemia
Blennius pholis
booters
Butt Wrap
capacity ration
civil mediation
Dagebüll
damper block
decrapifier
dichloracetic acid
diesel engined
downsloping
dynamic econometric model
emulator trap processor
exchange pairing (grell 1962)
exotoxic tyberculin
field original map
go to end
hand basket
heat-flow gauge
hemangio-endothelioma
high tension oil filled cable
Holstebro
homefelt
hydroxies
incur expense
isoacceptor tRNA
ITLC-SG
ivory scrap
krump
l-naphthaldehyde
language board
layered structural mineral
level of base plate and support
Littleton,Sir Thomas
Loeb algorithm
loop-type pit bot-tom
low-airspeed sensing and indicating equipment (lassie)
low-pressure piston
luminous surface
mcshan
megalurothrips distalis
memory by time period
midchain
Monom
multi-stage storage pump
natrii tauroglycocholas
neuroleukin(NLK)
nomar
Nuphar japonicum DC.
octylene
open fluidized bed
ox eye
passer-by
Paullina
phibalothrips peringuei
Piroplasma ovis
pointed
razor-cut
receive something with a grain of salt
rotation noise of propeller
royalest
sander valve
satinash
scrubber brush roll
self setting silicate process
self-energized seal
single-disk opener
sky wave correction
soft launch
spironucleosis
splitting of phoneme
staphyloangina
starlike curve
strike slop
subport organization
suleman
tension plate lock-up
tentage
three wattmeter method
tire cutter
Triosteum
tube pan
upper changeover
wash fast
with whip ans spur