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OpenStudy (anonymous):

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

11 years ago

OpenStudy (anonymous):

@inowalst

11 years ago

OpenStudy (inowalst):

What do you think?

11 years ago

OpenStudy (anonymous):

11 years ago

OpenStudy (anonymous):

so im i right??

11 years ago

OpenStudy (inowalst):

C is wrong. Try again.

11 years ago

OpenStudy (anonymous):

A??

11 years ago

OpenStudy (anonymous):

or c

11 years ago

OpenStudy (inowalst):

A is right.

11 years ago

OpenStudy (anonymous):

yeah! another one bro ???

11 years ago

OpenStudy (inowalst):

Sure.

11 years ago

OpenStudy (anonymous):

its a

11 years ago

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