一、为下列加粗字注音
呱呱()坠地掐()抽屉()无动于衷()
心扉()讥讽()歧()视鄙()视
二、为下列多音字注音组词
呱()______创()_______系()________
()______()_______()________
三、解释下列加粗的词语
1.呱呱坠地:_______________________________________________________________
2.无动于衷:_______________________________________________________________
3.幸灾乐祸:_______________________________________________________________
4.居高临下:_______________________________________________________________