what do they mean "when the dog saw a toddler drop food on the floor, he moved as quick as lightning to eat it up"

The dog rushed quickly to eat the dropped food.

Explanation:

"quick as lightning" is not possible but is meant to emphasize the speed the dog moved at to eat the dropped food.

beneatha's hair symbolizes wealth  

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the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."