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　　A hundred years ago, there were no planes．The Orville Wright and his brother, Wilbur, made the first plane．

　　The Wright brothers lived in Kittyhawk, USA．They made bicycles．

　　The brothers watched the birds．They watched them fly through the air．They wanted to fly like the birds．

　　Orville and Wilbur Wright make a plane．They called it Flyer 1．On December 1903, Orville Wright climbed into the plane．He started the engine．The plane rolled forward and flew．

　　Not many people saw this first flight．Only four men and a boy watched it．The plane did not fly very far：only 36.5 meters．It did not fly very long：only f 12 seconds．However, it was the first plane to fly．

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完形填空

What is the biggest animal of all?The whale 　　1　　．The blue whales are the 　　2　　 whales．Some blue whales weigh 　　3　　 a hundred tons．　　4　　 is that?Just think of a bus．A bus is big and heavy, 　　5　　 it weighs only about fifteen tons．A bus is about eight meters 　　6　　, but some blue whales are as long as thirty meters!Though whales are 　　7　　 big, they are a gentle kind giant．They live together and 　　8　　 each other．Now we know whales“talk”to each other 　　9　　 the water．And the giants“speak”　　10　　 singing birds．

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