A. he did not observe the sun carefully enough B. he could not see its curve C. the sun, the moon and the stars seemed to move a

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问题 A. he did not observe the sun carefully enough
B. he could not see its curve
C. the sun, the moon and the stars seemed to move around it
D. the earth circles around the sun
E. it looked like that at night
F. it has power over life on earth
Early man thought the earth was small and flat because______.

选项

答案B

解析 根据题干线索词the earth was small and flat将原文定位至第四段倒数第二句That’s why early man believed that the earth was small and flat,这就是为什么古人相信地球很小并且是平的。其原因在该句前被提及,即You cannot see the curve(曲线)of the earth at once.You would have no idea of how big it was.你不能即刻就看到地球的曲线,你也无法想象它到底有多大。B选项是对原句的同义改写,故B为正确答案。
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