- Section 1
| 81. |
This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece. |
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| 82. |
Who invented fuel cells in 1839? |
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| 83. |
Who invented the phonograph? |
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| 85. |
Who invented Automobiles using gasoline? |
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