Why does the author include a description of how the “ doorways and windows ” of Machu Picchu were constructed?
A、
ToindicatethedifferentkindsofstonesthathadtobecuttobuildMachuPicchu
B、
Toexplainhowancientbuildersreducedtheamountoftimenecessarytoconstructbuildingsfromstone
C、
Toprovideanillustrationofthekindofconstructionthatwasrequiredbeforearcheswereinvented
发布时间：2025-06-21 16:57:58
