Kites are made in many different sizes,colors and shapes.2.____________ It flies because air flows over and under the kite’s wing.The pressure under the wing helps lift the kite into the air.
3.____________ Early scientists sent kites up into the air to measure temperature at different heights.In 1752,Benjamin Franklin used a kite to prove that lightning was a form of electricity.He attached a metal key to the string of a kite.When lightning hit the kite,electricity passed down the string and Franklin got an electric shock.It was a very dangerous experiment that you shouldn’t copy.
Kites were also used to develop airplanes.The Wright Brothers experimented with kites before they flew the first airplane.4.____________ In World War One the Germans developed a large kite that could transport people to a submarine.Kites were also used to carry radio signals over long distances.
5.____________ Kite festivals are organized in many cities in all parts of the world.
A.Today most people fly kites as a hobby.
B.Kites are usually made of paper or cloth.
C.Kites were used in experiments.
D.No one knows for sure who invented the kite.
E.The name comes from a graceful bird called kite.
F.The oldest and simplest type of kite is the flat kite.
G.In the past,kites were sometimes used in wars.
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