AdolphMiyasaka624
AdolphMiyasaka624 AdolphMiyasaka624
  • 17-03-2015
  • English
contestada

The hot-air balloon launched by the Montgolfier brothers in 1783 was the ___ of the modern airplane. A. precursor B. conglomeration C. valor D. celerity

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Crystal7174
Crystal7174 Crystal7174
  • 18-03-2015
The correct answer is A - precursor, meaning to come before (person or thing). The key is the prefix "pre" which literally means came before or previous to. 
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