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If 'blue' is 'red', 'red' is 'green', 'green' is 'yellow', 'yellow' is 'black', what is the color of blood?
Red
Green
Yellow
Black
Green
Identify the actual real-world fact first, then apply the substitution rule provided in the question statement.
Identify the actual real-world fact first, then apply the substitution rule provided in the question statement.
Identify the real-world fact
The color of blood in reality is red.
Apply the substitution logic
The problem states that 'red' is 'green'. Therefore, we must replace the real-world color (red) with the substituted color (green).
A: Red is the real-world color, not the substituted code. C: Yellow is the code for green, not for red. D: Black is the code for yellow, not for red.
B is correct because the real color of blood is red, and the given coding rule specifies that 'red' is 'green'.
In substitution questions, do not get confused by the sequence; always start with the real-world fact and then find what that specific word is being replaced with in the problem.