Questions:
1) Who invented bifocal lenses?
2) Which state is nicknamed the "Treasure State"?
3) How many military academies are there and what are their names?
4) Which bird is the only one with the ability to fly backward?
Answers:
1) Benjamin Franklin
2) Montana
3) Five: U.S. Military Academy (West Point), U.S. Naval Academy, U.S. Air Force Academy, and U.S. Merchant Marine Academy.
4) the hummingbird
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