----- Nội dung dịch tự động từ ảnh -----
Read the passage.
The Wright brothers, Orville and Wilbur, were two American brothers, inventors, and aviation
pioneers who were credited with inventing and building the world's first successful airplane and
making the first controlled, powered and sustained heavier-than-air human flight, on December 17,
1903. In the two years afterward, the brothers developed their flying machine into the first practical
fixed-wing aircraft.
The brothers' fundamental breakthrough was their invention of three-axis control, which enabled
the pilot to steer the aircraft effectively and to maintain its equilibrium. This method became
standard and remains standard on fixed-wing aircraft of all kinds. From the beginning of their
aeronautical work, the Wright brothers focused on developing a reliable method of pilot control as
the key to solving "the flying problem". This approach differed significantly from other
experimenters of the time who put more emphasis on developing powerful engines. Using a small
homebuilt wind tunnel, the Wrights also collected more accurate data than anyone had before,
enabling them to design and build wings and propellers that were more efficient than rival models.
They gained the mechanical skills essential for their success by working for years in their shop with
printing presses, bicycles, motors, and other machinery. Their work with bicycles in particular
influenced their belief that an unstable vehicle like a flying machine could be controlled and
balanced with practice.
Question 20 (Question ID: 149-526598)
Complete the summary. Choose only ONE WORD from the passage for each answer.
In 1903, the Wright brothers completed the development of the first airplane that was capable of
sustaining controlled human Q20.......................The key to their success was a system that gave the
pilot the means to control and Q20.2...................... airplane. This set them apart from other
inventors who had focused on building Q20....................engines. The brothers had previous
experience with a wide variety of Q20.4................... but it was their work with Q20.5.............
that had the greatest influence on their ideas.
Question 21 (Question ID: 149-526674)
There is a concert in the paul