都是12岁左右的孩子写的:
Although Egyptians were renowned for their medicine and for papyrus,
other culture had impressive invention of their own.Around the time that
paparus was first used in Egypty, themesopotamians were making pottery
using the world's first potter's wheel. Not long after, horse-drawn
chariates were being invented.As early as 1,000 years before Chirst, the
Chinese people were using compasses because they don't want to lose
their way. The ancient world, then, was filled with great inventions
that, although they sound commonplace today, revolutionized life
duringthose time. These inventions are history's first inkling of
science.
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After conquering Asia Minor, Alexander headed toward Persia. AtGordium,
he found a huge knot, which was created by an old townhero, tieing an
oxcart to a pole in the center of the town.Alexander decided to solve
the Gordian Knot because whoever untiethe knot would be the king of
Asia. Soon he had an answer. He cutthe knot in to two by his sword, and
successfully solved thepuzzle. Alexander really conquered Persia and
became Alexander theGreat.
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Before the development of writing, people retain information intheir
heads. But it is difficult to recall things and pass them on accurately
to a different person. Writing is a way of storing information and
passing it to someone who lives in a different place or at different
times. Writing is not invented by one personor one society. Instead, it
had gradually evolved in different places and times because people need
to keep accounts or to record events. Writing takes many forms, from
simple picture writing to fancy scripts. Writing is found on every kinds
of materails, from paper to pottery. Today, writing is an indispensible
part of our daily life.
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To call Sir Issac Newton brillian would be an understatement. Helay down
three important laws of motion, which guide the science of physics. He
also formulated the universal laws of gravitation. In his study of
motion, he discovered that he needed to learn better in mathematics. He
developed a new mathematical field we now call calculus, and it was an
essential tool in science. He even showed us that the white light is
really composed of many different colors of light. In addition, he came
up with an entirely different design for telescope. Many historians said
Sir Issac Newton was the greatest scientist in the world.
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Democritus,an ancient Greek, is one of history's first true scientists.
Demoritus was wrong about many ideas, but he was right with two
important ideas. The first idea is that all things are made of atoms.
The second is that atoms are in constant motion.Democritus was not well
received in his time. Most of the scientits didn't accept his ideas. The
idea of the existence of atoms didn't gain much support in scientists
in almost 2000 years! Scientist don't always recognize a wonderful idea
when they encounter one.The history of science is literally filled with
instances of scientists rejecting sound ideas in favor of bad ones.
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Booklice are tiny insects which feed on mold. They crawl slowly on
bookshelves looking for dead insect bodies. A booklouse is usually less
than three millimeters long. But Don't just look for them,listen for
them too. The female attracts a male by rubbing her body against a piece
of paper or along another flat surface. So if you hear a very faint
creaking noise in your library, you won't be hearing things. The place
is just "alive" with booklice!
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Sherlock Holmes, a fictional character born in 1854, London,England, was
a brillian detective in some of the most memorable stories ever
written. We knew very few details about his family because they were
hardly mentioned in the stories. He enjoyed classical music and opera.
He was attentive, intelligent, and alert. He was also superbly good at
disguises, which he used while investigating crimes.
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The 16th and 17th centuries were the most exciting times in the history
of science. The excitement began in 1543 when two works were published.
The first one was by Nicolaus Copernicus. His booklaid the idea about
the earth, sun, planets and stars. Copernicus believed that Ptolemy's
view of the universe was wrong. Rather then placing the earth in the
center and believing that all the planets revolving around it,
Copernicus put the sun in the center and assumed that all the planets
travelling around the sun. This viewis called the heliocentric system,
because helios, a Greek god, is the god of the sun. It is also called
the Copernicus system in honor of Copernicus.