Today is the last day of the end of his speech!
I am nervous to do - I picked the theme of do not do that - Skyscrapers and Environment?
OMG
Fortunately, I was ranked No. school is after watching the performance of students before~\(≧▽≦)/~lalala
I was immersed in an atmosphere of tension and glad of!
Unknowingly, have its turn to study film in front of me who play the girls!
However, she nervous than I do!
I looked at her very quickly washed up on the podium!
Roared out a full self-confidence, good morning, every day!
The audience of students and teachers were very surprised, and then to say that every day?！！！
She seems to not be aware of their slip of the tongue!
And then went on to say, is not it? Every day?
全场被雷倒，爆笑到不行
She also quickly put an end to their "wonderful" speech!
Well! Have come to me! Not nervous, not nervous, OK? !
Good morning,boys and girls！
Today my topic is
Skyscrapers and Environment
In the late 1960's, many people in North America turned their attention
to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a
city often overburdens public transportation and parking lot capacities.
Skyscrapers are also lavish consumers, and wasters, of electric power. In
one recent year, the addition of 17 million square feet of skyscraper
office space in New York City raised the peak daily demand for electricity
by 120, 000 kilowatts——enough to supply the entire city of Albany, New
York, for a day.
Glass-walled skyscrapers can be especially wasteful. The heat loss (or
gain) through a wall of half-inch plate glass is more than ten times
that through a typical masonry wall filled with insulation board. To
lessen the strain on heating and air-conditioning equipment, builders of
skyscrapers have begun to use double-glazed panels of glass, and reflective glasses coated with silver or gold mirror films that reduce glare
as well as heat gain. However, mirror-walled skyscrapers raise the
temperature of the surrounding air and affect neighboring buildings.
Skyscrapers put a severe strain on a city's sanitation facilities, too. If
fully occupied, the two World Trade Center towers in New York City would
alone generate 2.25 million gallons of raw sewage each year -- as much as acity the size of Stanford, Connecticut, which has a population of more than 109, 000.
well，in my opinion
I think the environment problems arent news today，they are caused by the short-sighted behavious of human beings！
At the same time，think about the past，we didnt have kinds of technology things，but people still live happily.
You can say every time has its own problems，tis hard to make sure that which time is the best，actually，the questions is，we can't stop the times flying forward，we can't imagine what the would will be in the future. So we should do our best to be responsible for ourselves，thats all，thank U！
Tan
2009-11-14 13:58
2009-10-13 11:51
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2009-07-24 14:31
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2009-07-19 22:48
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