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32. __________ was the center of our planetary system was difficult concept to grasp in the Middle Ages.
A. It was the sun and not the earth B. Being the sun and not the earth
C. That the sun and not the earth D. The sun and not the earth
A. It was the sun and not the earth B. Being the sun and not the earth
C. That the sun and not the earth D. The sun and not the earth
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