Flyingoverseas 版 (精华区)
发信人: bonjovi (bonjovi), 信区: Flyingoverseas
标 题: TWE写作素材(2)——Pollution
发信站: 哈工大紫丁香 (2001年02月26日13:19:10 星期一), 站内信件
Earth Day
Earth Day was started in 1970. It was organized to help raise environmental
awareness to the general public.It helped spark the creation of the Environm
ental Protection Agency.
By the year 2000 there will be6.3 billion people on the planet. There was al
most twice as much land devoted to urban life in 1990 than there ws in 1970.
The Earth Day provides a special day to remind the population to take care o
f the Earth.
2.Going Green
When Jeffrey Hollander launched his seventh generation live of products ten
years ago, the market for nontoxic household cleaners and recycled paper pro
ducts was virtually nonexistent. Today, it's a booming businness.
The niche is environmentally friendly,or so called green products.
A green product is one that has less impact on the environment. So that mean
s that it might use less resources, it may create less waste and be more eve
rgy efficient for example.
An average home might have an evergy bill of 1300 dollars a year. If all the
products, all the appliances in the home were Energy Star, that home could
save about 30% a year, and for the average home in the U.S. that might be ar
ound $400 a year.
3. Description of the earth:
Earth means many things to the people who live on it. To a farmer, Earth is
rich soil. To a road builder, Earth means mountains of hard rock. For a sail
or, Earth is water as far as the eye can see. A pilot's view of Earth may in
clude part of an ocean, a mountain, and patches of farmland. An astronaut sp
eeding through space sees the Earth's round shape and the outline of lands a
nd oceans.
4. Car Pollution
Today, there are more than 630 million cars in the world. U.S. drivers own a
third of these vehicles, which in turn produce a third of the nation's gree
nhouse gases -- emissions (primarily carbon dioxide) that accumulate in our
upper atmosphere and cause global warming. We're seeing the effects in weird
weather, melting glaciers, and rising oceans that pose an immediate threat
to many island nations.
Refining, distributing, and burning a gallon of gasoline produces about 30 p
ounds of carbon dioxide. If every car in the U.S. were replaced by one that
was 10 mpg more fuel-efficient, carbon dioxide emissions would be reduced by
250 million tons per year, and the nation's annual contribution to global w
arming would be cut by nearly 20 percent.
Pollution
The most serlous result of air pollution is from its harmful effect, on huma
n
health. Both gases and particuiates burn people's eyes and irritate the lung
s.
Particulates can settle in 1ungs and worsen such respiratory diseases as ast
hma and
bronchitis. Some expers even beIieve that particulates may cause such diseas
es as
cancer emphysema and pneumonla. '
Air pollution also harm plans. Poisonoas gases in the air will turn into aci
d
rain which spread over thou'ands of square kilometers and restric the growth
and
even,ually kill nearly all kinds of plants.
Polluted air can corrode such hard and strong materials as concrete and stee
l .
which are widely used in building houses and constructions. In some cities.
statues
and other sculptares and art obiects outdoors have dislntegrated as a result
of
erosion by polluted air.'
But advance in controlling exhaust from automobiles has been limited. Filter
s
used inare not efficient in absorbing poisonous gase. and particulates To re
duce
hazardous. experts resort to new types of engines and new fuel.. The idea an
d
prototypes of engincs have long been proposed and tested. Fuel in the turbin
e engine
can be burned almostly completely . producing more power, releasing less unb
urned
hydrocarbons and almost no carbon monoxide
The harnessing of the new energy
With the increasing concern over hazardous environmental consequences caused
by
burn-ing fos.il fuel. fuel cells now win favor in Japan and the U. S. . Expe
rts
predict that fuel cellswill eventually replace nuclear plants in 20 to 30 ye
ars,
supplying eiectricity to households.and they will be used in cars and in spa
ce
stations, as the major engines. Researchers are working hard to reduce their
volume
and cost so that they can meet the requirements of future energy resources i
n
prac,ical use
Making use of tides and waves to produce electricity is feasible and
economical. Many idieas have been proposed. for example, building a dam at t
he mouth
of a bay to trap water in the bay when tbe tide comes and tben when it ebbs,
driving turbines with that water to genterate electricity. To make use of th
e
kinetic energy of waves, a series of buoys Linked together in rows offshore
absorb
kihetic energy when the waves push them back and forth.This incessant moveme
nt can
drive hydraulic mackines to generate electricity.
Turning wind power into electricity is nothing new, today wind-powered
electrogenerator are commercially available. your home can have one installe
d on the
roof. The machine will keep the current in the best orientation. It is equip
ped with
rechargeable batteriest where electricity can be stored for use when the win
d lulls.
So you can have a cheap andsteady electricity suppLy from that contraption.
the sun provides inexhaustible energy for all creatures on earth. In fact,
except for nular energy. all fuel from which we obtain energy today came and
comes
from the sun. scintists predict that modern society wiU mainly rely on eolar
nnergy
in various ways in the next century.
weigang,wang
Along the Thames (environment protection)
To develop a little the line of poet Edmund Spenser, who in the 16th century
wrote," Sweet Thames run softly, till I end my song": it still runs softly
enough,but could never be called sweet in any gustatory sense. If its brown-
black color fails to sound sufficient warning we could, but will refrain
from recalling the dreadful things that thames oarsmen say a mere mouthful
will do to anyone who falls in.
Environment Protection
------------------------------
A sample and some useful data:
Today, there are more than 630 million cars in the world. U.S. drivers own a
third of these vehicles, which in turn produce a third of the nation's
greenhouse gases -- emissions (primarily carbon dioxide) that accumulate in
our upper atmosphere and cause global warming. We're seeing the effects in
weird weather, melting glaciers, and rising oceans that pose an immediate
threat to many island nations.
Refining, distributing, and burning a gallon of gasoline produces about 30
pounds of carbon dioxide. If every car in the U.S. were replaced by one that
was 10 mpg more fuel-efficient, carbon dioxide emissions would be reduced by
250 million tons per year, and the nation's annual contribution to global
warming would be cut by nearly 20 percent.
some description about earth:
Earth means many things to the people who live on it. To a farmer, Earth is
rich soil. To a road builder, Earth means mountains of hard rock. For a
sailor, Earth is water as far as the eye can see. A pilot's view of Earth
may include part of an ocean, a mountain, and patches of farmland. An
astronaut speeding through space sees the Earth's round shape and the
outline of lands and oceans.
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