Who invented the printing press?, Galileo Galilei, Bill Gates, Johannes Gutenberg, Who discovered the penicilim?, Alexander Fleming, Robert Koch, Louis Pasteur, Who was the first person to step on the moon?, Yuri Gagarin, Neil Armstrong, John Glenn Jr, Who discovered the radium and polonium?, Mary Anning, Raquel Carson, Marie Curie, When was facebook created?, in 1999, in 2004, in 2000, When was the flash memory invented?, 1984, 2000, 1990, What is the name of the first robot?, R2-D2, Unimate, Wall-E

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