Sometimespeoplecalleachother“scared-cat”,buthaveyoueve...
问题详情： Sometimespeoplecalleachother“scared-cat”,buthaveyoueverthoughtaboutthisexpression?Whenacatisfrightened,itsheartstartsbeatingfaster,itsmusclesgettense,andtherearechangesinthechemicalsinitsb...