GRE Logical Reading: ETS-GRE逻辑单题ETS - 150OAP1Q2140LH1PK$

Restoration of the original paint colors in Colonialera rooms has until now relied on the technique of scraping paint in a small area down to the chronological level that represents the paint layer of the Colonial period and then matching the color found at that level. This color was most often the color of putty.