时间:2018-12-26 作者:英语课 分类:美国英语听力80篇


英语课

[00:04.57]A new American study shows that chemicals used to kill insects in the home may increase the risk of developing Parkinson's disease.

[00:17.14]Earlier studies have shown that people who work around pesticides 1 are at greater risk of developing the disease.

[00:26.25]But scientists say the latest study is the first to link the'disease to the use of pesticides in the home.

[00:35.42]Parkinson's is a disease of the central nervous system.

[00:40.88]It causes the loss of a chemical in the brain called dopamine.

[00:46.68]As the disease progresses, it causes the muscles to become hard and difficult to move.

[00:54.23]It also causes the arms and legs to shake.

[00:58.70]Scientists at Stanford University in California studied about 500 people from northern California who have Parkinson's disease.

[01:11.47]The people were asked detailed 2 questions about past use of pesticides and other chemicals in their homes or outdoor gardens.

[01:22.52]This information from the Parkinson's patients was compared with information from more than 500 people who did not have the disease.

[01:34.09]Researchers found that the people who were exposed to pesticides

[01:39.68]were more than two times as likely to develop Parkinson's disease as those who were not exposed to the chemicals.

[01:48.96]Scientists say exposure to pesticides in the home was linked to the highest risk of developing the disease.

[01:58.88]People who used pesticides in their outdoor gardens were not found to be at greater risk for Parkinson's.

[02:08.16]It is not clear why pesticides may increase the risk of Parkinson's disease.

[02:15.55]Scientists say some chemical compounds may target and kill cells in some parts of the brain.

[02:24.69]Damage to nerve cells in a part of the brain called the substantia nigra leads to signs of Parkinson's disease.

[02:34.31]Lorene Nelson is the leading researcher of the Study.

[02:40.68]She presented the findings earlier this month at the yearly meeting of the American Academy of Neurobiology in San Diego,California.

[02:51.08]She says chemicals in the environment may cause the death of some brain cells.

[02:59.04]But she says it is too early to suggest that people change their use of pesticides.

[03:06.85]Ms Nelson says more studies are needed before scientists can know for sure what causes Parkinson's disease.



1 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》
2 detailed
adj.详细的,详尽的,极注意细节的,完全的
  • He had made a detailed study of the terrain.他对地形作了缜密的研究。
  • A detailed list of our publications is available on request.我们的出版物有一份详细的目录备索。
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air dynamics
airlift beet pump
arene epoxide
Banfele
beatism
Berlingen
Bourbon, Charles
Buckley's chance
catalyst cartridge
chirrhotic inflammation
corrosive atmospheres test
coupled modes
cut someone out of all feather
depletion of resources
dequeuing
despatch department
destination code base
Deutsche Normenausschuss
einstein-podolsky- rosen paradox
Enfesta
exhausted receivers
family Daubentoniidae
fancy diagonal
flat amplifier
folliculous
fore castle side plate
gangland
general parts of machine
genus Dolichonyx
going with the flow
hair salt
headmount
held covered clause
income equity fund
income redistributing account
inland harbor
input error control
isonitrosoacetone
johannes brahmss
Kaimon-dake
lienunculus
likhachev
lobi spigelii
maculae acusticae
mechanical flowsheet
metallographic test
mitofsky
multiinput
multiple experts
needle piston
nonobscene
odd-jobbings
oligotrophic brown soil
orange-juice concentrates
oxalacetics
parallel main storage
paying remuneration according to standard output
penalty-area
photocoagulative
piney buttes
pitched turbine type agitator
plate divergence
purple wire
quasi-negotiable document
rail lifter
reaction media
receiving point
rejection of a theory
rentering
RPAS
rulemakers
sagittal nuclei
sand mixer
schetical
seal wax
selenium sulfite
sesquicentennially
ship acquisition
sicad
significativeness
sirkin
small bundle
so As not to
sodium orthotitanate
solar concentrator
spam relays
Step Potential
stinkardly
stochastic decision process
stripy defect
suavis
sunburst varicosities
svdp
Tiberias, L.
to jump for joy
toliara (tulear)
trafficky
tray cloth
trench-arc
ultraviolet astronomy
watch your hand
wyntoun