I once knew an invention of the light bulb by Mr. Thomas Edison. He worked very hard to invent such a wonderful thing. If he did not invent the light bulb, would we now have electric lights in our homes, or in the streets? I am very grateful and admire Mr. Thomas Edison.

Chúc bạn học tốt

Cho mik hay nhất, cảm ơn và 5 sao nha.

Since ancient times, people have dreamed of conquering the world. People often use the natural world as inspiration for their inventions. By observing animals and plants, they design new products to serve humans. Animals can do many things humans cannot, like birds can flying. So why can birds fly? People always dream of flying in the air. Over the centuries, many inventions have collaborated to create machines that simulate birds. The bird has a body that is perfectly suited for flying, light bird bones, and a bird's head with an air-filled compartment that reduces its weight. Birds have flexible wings, especially these wings also have feathers. Through flapping the wings, birds fly. From that inspiration, people built planes.The aircraft was invented on 17 December 1903 by brothers Orville and Wilbur Wright. "Aeroplane" is "a means of transporting people and goods" in the air. The aeroplane, with its tingings and shapes imitating those of a bird. 

Hmm thấy khúc cuối còn thiếu gì đó...

Bạn biết mình thiếu j thì nhắc mình nha... 

Không copy mạng đâu =.=