【正确答案】 D

【答案解析】细节题。根据The calculations look an awful one like the calculations of the link of the sides of triangle．So that’s what many historians assume they were．可知，历史学家认为那些汁算是关于三角形边的关系的。因此，正确答案是D。

【正确答案】 B

【答案解析】细节题。根据It concerns an ancient Mesopotamian tablet that has some calculations on it using square numbers．可知，涉及运用平方数计算。因此，正确答案是B。

【正确答案】 D

【答案解析】推断题。根据Because we discovered that Mesopotamians didn’t know how to measure angles，which is a crucial element in the whole process of triangle calculations．和In all likelihood，it was the ancient Greeks who first calculate the link of triangle’s sides using square numbers．And this was hundreds of years after the Mesopotamians可知．三角形运算过程的关键因素是要知道如何量角，古希腊人十分有可能是第一个运用平方数计算三角形边长关系的。由此推断古希腊人知道如何量角。因此，正确答案是D。