Choose one word or phrase from each number that best completes the senten-ces!
The idea that red means stop and green go has impacted our lives in more ways than just traffic signals. We (1)from a young age that the color red me-ans danger and green means it is okay to move forward. But why were those particular colors chosen for traffic lights in the first place? For something we have to look at every day, why couldn't they have been prettier colors like magenta and turquoi-se? Well, it is important (2) that be fore traffic lights for cars even became a thing, there were traffic signals for trains. (3) railroad companies used red to mean stop, white to mean go, and green to mean caution. As you could imagine, train conductors ran into a few problems with white (4) go. For instance, one train conductor mistook a bright star (5) a white light and thought he was all clear. (6) incidences like that, railway companies eventually moved green meaning go and it has been that way ever sin-ce. (7) red goes, it has always been a color (8) danger, long before cars were even around. This most likely started because it is the color (9) so it can be seen from a greater distance than other colors. As far as yellow goes, it (10)drivers because it has a slightly shorter wavelength than red, but not as short as green.