with one princess.D. Tramper found the secret of the princesses.Day 4Fast flight in the future (P6 ……

版建议阅读时间 7分钟  NASA releases video of the first helicopter flight on Mars. NASANASA releases video of the first helicopter flight on Mars. NASAIn 1903, the Wright Brothers flew the “Flyer 1 ……

the speed of a fast bicycle, a solar-powered plane took to the skies for the first time. It had passed an.... In 1999, he copiloted (共同驾驶) the first nonstop round-the-world balloon flight.During the 90-minute ……

-line flight (滑索飞翔) from the landmark. They start from the second floor of the Eiffel Tower. This is about 115 meters above the ground. The whole flight is 800 meters long. It takes a person 1 minute ……

, FAST, opens the door to future discoveries in space.The country’s new telescope, FAST, opens the door to future discoveries in space.PAGE 6PAGE 6 ……

quick. But they’re probably not as fast as the shortest flight in the world. It takes just two...) for a round-trip (往返) flight between the islands. ……

.The T-flight is very fast because it moves in a special tube (管道) with almost no air. With less air... resistance (摩擦阻力).The T-flight is very fast because it moves in a special tube (管道) with almost no air ……

engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast... the fast-moving air put out the combustion (燃烧) flames. However, a scramjet engine works properly ……

engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast... the fast-moving air put out the combustion (燃烧) flames. However, a scramjet engine works properly ……

engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast... the fast-moving air put out the combustion (燃烧) flames. However, a scramjet engine works properly ……

in the world. It will make its first flight on March 27, weather permitting. The X-43A has been developed...) with temperature and altitude). The unpiloted plane can travel so fast due to the introduction ……

program in the UK holds a special flight (飞行) school. People choose 12 dogs . These dogs are very smart... they can be pilots in the future!Have a goTrue or false1. Alexandra Palace is in Paris. ( )2. The 12 ……

flight and how planes have developed over the last 100 years. You'll also read about a great Junior 1... dreamed of flying for centuries. But they've only been able to fly for 100 years!The first flight wasn ……

there. They experienced airport security (安保), in-flight service and other jobs. In February...) in the future. Experience in the sky: Middle school students in Nantong, Jiangsu, visited the Civil ……

THE driver of the near future, according to IBM, will be able to dictate and send email, get directions to a restaurant, get weather and flight information, and even play a tune game on his onboard ……