- 问题详情:Scientiststhinkthatmostanimalscan’tseecolors.Theworldisblackandwhitetothem. Tofindoutifdogscouldseecolors,scientistsgavesomedogsfoodeverytimetheyplayedacertainpieceofmusic.Thedogsgotreadytoeatonlywhentheyheardthispieceofmusic.Theydidnotge...
- 20266