①十分熟练。反义词:生疏。____
②细小的水波清澈明净。____
③文中指大的波浪翻腾激荡。____
④沉醉在某种境界或感受之中。____
Carol picked some strawberries and ____ (take) them home.
求函数y=cos2x+2sinx﹣2值域.