YDS READING PASSAGES / TEST 4 45. Soru

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100 %

45.

-We learn from the passage that J. Etienne and Joseph M. Montgolfier ------ .

ignored the presence of atmospheric pressure

succeeded in a type of flight conceived several centuries earlier

made many drawings, but never built a successful machine

were the first men to imagine air balloons which could rise in the sky

did not think helicopters could ever be successful