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Question

1) Have you ever been in a hot air balloon Before the of the _________ hot air balloon, no human had ever successfully flown above the ground. INVENT 
B12 Two _________ brothers, Josef and Etienne Montgolfier, were responsible for designing the world’s first hot air balloon. FRANCE 
B13 The first successful _________ was in 1783, and the Montgolfier FLY 
B14 brothers immediately became _________ throughout the world. FAME 
B15 The design of hot air balloons is based on the _________ law that hot air rises. SCIENCE A burner at the bottom of the balloon provides the heat. 
As the air inside the balloon gets hotter, the balloon takes off . Its height above the ground is determined by how hot the air inside is and its B16_________ of travel depends on the wind. DIRECT

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Дмитрий Ярмолюк · Accepted Answer

1) Have you ever been in a hot air balloon Before the of the invention hot air balloon, no human had ever successfully flown above the ground. INVENT 
B12 Two french brothers, Josef and Etienne Montgolfier, were responsible for designing the world’s first hot air balloon. FRANCE 
B13 The first successful flying was in 1783, and the Montgolfier FLY 
B14 brothers immediately became famous throughout the world. FAME 
B15 The design of hot air balloons is based on the scientific law that hot air rises. SCIENCE A burner at the bottom of the balloon provides the heat. 
As the air inside the balloon gets hotter, the balloon takes off . Its height above the ground is determined by how hot the air inside is and its direction of travel depends on the wind. DIRECT 
 
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