时间:2018-12-26 作者:英语课 分类:美国英语听力80篇


英语课

[00:04.83]Last month, delegates from more than one-hundred nations approved the first international treaty

[00:12.54]about trade in products made by processes of genetic 1 engineering.

[00:18.00]Genetic engineering involves changing the genes 2 of living organisms.

[00:24.24]The new agreement did not end the worldwide debate about genetically-engineered crops, however.

[00:32.00]Four agricultural experts discussed the issue at a recent conference in Washington, D.C.

[00:39.71]Gordon Conway is an ecologist and president of the Rockefeller Foundation.

[00:46.79]Mister Conway said he believes genetically-engineered foods might help to end world hunger.

[00:55.07]But he says the risks from such crops are important to consider.

[01:01.02]Mister Conway says the issue is whether some genes may accidentally spread to other living things.

[01:09.85]He says this could lead to the creation of strong plants or insects with a resistance to the treated crops.

[01:19.10]He also is concerned about the effect of genetically-engineered plants on the soil.

[01:26.67]Patrick Holden is director of the Soil Association of the United Kingdom,

[01:32.21]a British group that supports the idea of chemical-free agriculture.

[01:38.51]He told the conference that his group's opposition 3 to genetic engineering has been growing since the early 1990s.

[01:48.30]He says this opposition is based on possible threats to the environment and human health.

[01:56.87]He also says the technology denies choice to producers and consumers and is not necessary in developing countries.

[02:07.56]However, a leading Kenyan environmentalist dismissed the idea that developing countries do not need genetically-engineered crops.

[02:18.76]Calestous Juma is director of the Center for International Development at Harvard University in Cambridge, Massachusetts.

[02:29.60]Mister Juma says genetic engineering could help improve crops and people's diets and increase money for farmers.

[02:39.50]It could also help end hunger and reduce the number of poor people in developing countries.

[02:47.26]He says many nations already have policies for using the technologies in a safe way.

[02:55.41]Wes Jackson of the Land Institute in the state of Kansas says some good could result from genetic engineering research.

[03:05.13]But he says most efforts to redesign plants probably would fail.



1 genetic
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
2 genes
n.基因( gene的名词复数 )
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
3 opposition
n.反对,敌对
  • The party leader is facing opposition in his own backyard.该党领袖在自己的党內遇到了反对。
  • The police tried to break down the prisoner's opposition.警察设法制住了那个囚犯的反抗。
学英语单词
abeche (abeshr)
adjustment continuation condition
aerolongation
aneio-elephantiasis
Aquinas, Saint Thomas
aromatic herbs
automatic digital input-out-put system
avenss
axial cell
Ba Jin
back-combings
Bergsstadhir
blade surface development
branchio
callithumpian
Cephalotaxus latifolia
chuck-wrench
cobamide coenzyme
contorted fissure
costotransverse ligament
counter-notice
cristae tegminis tympani
cyclodimerizations
d.w.c.t.
daniloff
Deacetyloleandrin
deer tick
dennisons
desulfur
differential motor
dipsy
distressfulness
double bag
electric master clock
electromagnetic induction
encephalasthenia
Epicrates
erwitt
escareno
Fibonacci Time Zones
flat linear induction pump
forward instrument panels
fumeworts
gamma-hydroxybutyrates
Gorna Gnoynitsa
grain of bread
high frequency ground wave radar
Holy Joe
hrozny
incurvata
independent switch
insulin pump
jaimes
jervolinoes
kamotho
Kipelovo
lap rivet
leave-in
lesguft academy
Los Pechos
loss of auxiliary power
m-phenylenediamine
major muscle group
microdiagnostic loader
molal heat content
n-adic predicate
negroid races
new-drug
nonuniform probability distribution
not with it
npas
ossified fibroma
particulate phase
pataphysician
pendulum kiln
Picea excelsa
posterior fibrous ligament
preboring for nails
Priluki
pump cooling
pyrrhulas
ram-type pressure multiplier
right justified
roadsweeper
Rosie, Mt.
Rumex obtusifolius
Sitchaung
sliding armature starter
soft image
spondulics
string basses
sweetful
tajuria diaeus karenkonis
The Baltic Mercantile and Shipping Exchange
time delay unit
touch upon
Twin Cities
underlying commodity
unmotivateable
ventrocystorrhaphy
winch platform
X-ray phase analysis