1/ What is the main idea?
Benjamin Franklin worked hard to make his city a great place to live
2/Benjamin Franklin was very interested in electricity. One day he tried a very dangerous experiment to prove that lightning was electricity. He attached a key to a kite string and flew the kite during a thunderstorm. When the lightning hit the kite, sparks flew from the key. Benjamin Franklin proved that lightning was electricity. What is the main idea?
Benjamin Franklin performed an experiment that proved lightning was electricity.
3/What is the meaning of “determine’?
Decide
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