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  3. Long ago men learned that the world of nature is built with mathematical exac...

Long ago men learned that the world of nature is built with mathematical exac...

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问题 Long ago men learned that the world of nature is built with mathematical exactness according to refined and powerful laws; every bee stokes its wings exactly 440 times a second to propel itself forty miles an hour; the eye of every fly has exactly 7,000 l
选项 A.By contrast.
B.By classification.
C.By making assumption.
D.By giving example.
答案D
解析细节题。根据“The early Egyptians know enough of geometry to build the pyramids and the Greeks used trigonometry to measure the circumference of the earth two thousand years before Columbus sailed． European civilization combined geometry and trigonometry with th
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