Complete the following paragraph with key information from the text.The article consists of three stories about 1)_______ of flight. The first story is about a 2)_______ named Wan Hu, who made an unsuccessful attempt at 3)__________ in A.D.1500. He built a spaceship powered by 47 rockets using 4)_________. His idea was 5)_______, but his dream of flight came true 500 years later when China successfully 6)_________ its first manned Shenzhou V spaceship. The second one is about the Spruce Goose, a 7)________ boat designed to meet the need of 8)________ troops and materials during World War II. It was made entirely of 9)________ and still holds the record for the 10)_______wingspan . Although it was never put to use, many of its design features have been incorporated into today’s 11)_______ planes. The last is about Leonardo da Vinci, the most famous 12)________ of the Renaissance. Apart from his great artistic work, he also drew sketches of flying 13)________ with flapping wings controlled and steered by human 14)________. Five hundred years later, a professional parachutist made a successful jump using a wood and canvas parachute based on one of da Vinci’s 15)___________.