in 1903 the wright brothers made the first powered flight in history at kitty hawn. north carolina.thissite was chosen because of its (28)___.which wuold lift the plane like a kite.the fist attempt lasted only twelve seconds and covered a distance of less than a wing span of the latgest airplanes of(29)___aircraft.soon the wrights and other inventors and pilots were busy improving the airplane.they made much longer flights and even put into some (30)___uses.in 1909 the wights delivered the fist military plae(31)___ the united states  army.as early as 1914 / a plane had begun to carry (32)___ on daily flights.and is 1918 regular air-mail service was started between washington and new york
28 A.winds             B.air              C.atmosphere            D.stcam
29 A.new                B.current        C.modern                  D.recent
30 A.true                B. practical     C.realistic                 D.thearetical
31 A.by                  B.with             C.for                        D.to
32 A.customers      B.passengers  Cclients                    D.patients