What is the main idea of the passage? _______

[单选题]What is the main idea of the passage? ________

AThE.theory oF.relativity.

BExactness is thE.corE.oF.science.

CScientists arE.different from ordinary people.

DExactness ways oF.usinG.tools ar

EthE.keys to thE.makinG.o

FA.scientist.

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参考答案

试题答案：

D

答案解释：

【答案】D【解析】主旨题。根据第一段与第二段的第一句。

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