longer and longer distances.He also entered the world-famous air races of the time.During the 1920s and 30s,airplane races 9 Jimmy Doolittle won three of the most important races,the Schneider Marine Cup,the Bendix Trophy race and the Thompson Trophy race.By now,most Americans knew the name Jimmy Doolittle. VOICE TWO: Perhaps Jimmy's most important work during this period involved 10.In the early years of aviation it was almost impossible to fly in bad weather.Many pilots 11 in poor conditions because they became lost.In a heavy fog,they could not tell if they were going right,left,up or down.Many pilots and aviation experts said the problem could not be solved.They said it was impossible to fly in bad weather. Jimmy Doolittle began working with experts who made flight instruments.These instruments helped tell if the aircraft was going up,going down or turning. 12 Other instruments 13 to help find the landing area. KEYS: 1.general 2.using only instruments to guide his airplane 3.attacks 4.they thought being small also meant being weak 5.boxing champion 6.mineral engineering 7.combine his flying skills and his interest in engineering. 8.involved 9.were used to test new aircraft designs 10.instrument flying 11.crashed 12.The instruments helped a pilot fly straight 13.linked radios to a direction devicelonger and longer distances. He also entered the world-famous air races of the time. During the 1920s and 30s, airplane races 9 . Jimmy Doolittle won three of the most important races, the Schneider Marine Cup, the Bendix Trophy race and the Thompson Trophy race. By now, most Americans knew the name Jimmy Doolittle. VOICE TWO: Perhaps Jimmy's most important work during this period involved 10 . In the early years of aviation it was almost impossible to fly in bad weather. Many pilots 11 in poor conditions because they became lost. In a heavy fog, they could not tell if they were going right, left, up or down. Many pilots and aviation experts said the problem could not be solved. They said it was impossible to fly in bad weather. Jimmy Doolittle began working with experts who made flight instruments. These instruments helped tell if the aircraft was going up, going down or turning. 12 . Other instruments 13 to help find the landing area. KEYS: 1. general 2. using only instruments to guide his airplane 3. attacks 4. they thought being small also meant being weak 5. boxing champion 6. mineral engineering 7. combine his flying skills and his interest in engineering. 8. involved 9. were used to test new aircraft designs 10. instrument flying 11. crashed 12. The instruments helped a pilot fly straight 13. linked radios to a direction device