When did color TVs start appearing in people's homes?, in the 1930s, in the 1950s, in the 1970s, How long was Neil Armstrong on the surface of the moon?, for 21 hours, for 41 hours, for 3days, When did Albert Einstein live?, from 1849 to 1925, from 1864 to 1940, from 1879 to 1955, When did the dodo bird go extinct?, about 100 years ago b, about 300 years ago, about 1,000 years ago, 5 When did the United States become independent?, on October 12, 1492, on January 1,1608, on July 4, 1776

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