The airplane was ____ by the Wright brothers.
A: produced
B: invented
C: discoverd
D: introduced
A: produced
B: invented
C: discoverd
D: introduced
举一反三
- The Wright brothers failed a lot of times in their attempts at human flight.
- The completely new method was _______ by Jack. A: discovered B: invented C: created D: produced
- The Wright brothers are _____. A: American aviators, engineers, inventors and aviation pioneers B: a bronze sculpture C: an American statesman D: an American ganster
- In 1903, the ______ flew an aeroplane for a brief 12 seconds at Kitty Hawk, North Carolina. A: Franklin B: Wright brothers C: Johnson D: Einstein
- After the new technique was introduced, the factory produced _____tractors in 2002 as the year before.