The author does not include among the sciences the study of _____. In the author’s view, the Greeks who studied conic sections

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问题 The author does not include among the sciences the study of _____.
In the author’s view, the Greeks who studied conic sections _____.

选项 A、were mathematicians.
B、worked with electricity.
C、were interested in navigation.
D、were unaware of the value of their studies.

答案D

解析 细节理解题。本题问:在作者看来,研究圆锥体的希腊人当时如何?第3段第4句写道:"如果希腊数学家不热心致力于研究圆锥体的截面,而且丝毫没有想到,这种研究有朝一日会有用,那么几个世纪以后就不可能有远离海岸的航行"。
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