From Henry David Thoreau s Concord jail experience came his famous essay______.
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A superb book entitled______came out of Henry David Thoreau s two year experiment at Walden Pond.
Ralph Waldo Emerson s truest disciple, the man who put into practice many of Emerson s theories , was______.
设计单位要依据场地三通一平后的状况进行三维建模，为后期建模提供场地模型，可以使用()软件完成。
A. Navisworks
B. Microsoft Office
C. AutoCAD
D. Civil 3D
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