book review16

I read “FLIGHT”.　When I was child, I thought that I want to fly high up in the sky.

Birds move their wings up and down and they fly. People can move their arms up and down but they don’t fly. This is because a bird has big wings and a small body, but people have small arms and big bodies. People watch birds that fly freely and wanted to fly like birds.But watch a bird for minute. Often it is flying, but its wings do not move. Because of the air under the wings move slowly, but the air over the wings moves faster. In the air, the bird’s wings move the air back, so it flies through the air. This is called “thrust”. The first time a man flew with lift and thrust, and without an engine, up and through the air, was his arms, thrust the Gossamer Albatross through the air. Three thousand year ago, Icarus tried and died. One thousand years ago, Oliver of Malmesbury tried and nearly died. Five hundreds years ago, Leonardo da Vinci tried, but his plane too heavy. And finally, in 1903 the Wright brother tried and flew for fifty-nine seconds.
Today, there are many kinds of airplanes in the world. Some of them are used to carry passengers and some of them were used by army. Today airplanes became a famous traffic way but many scientists still continue studying about them not to drop and to be able to fly safely.But the flight for flight has been long and dangerous.

I think airplanes are dangerous because passengers cannot do anything if the airplane starts dropping. All they can do is waiting. Though they are dangerous, we use them because they are useful, so I hope them to be more safely.