题目

函数的顶点坐标是___________． 答案：【答案】(-1,3)【解析】根据二次函数的顶点坐标确定方法，直接得出二次函数的顶点坐标是：(?1, 3).故答案为：(?1, 3). 1题图 2题图 3题图 4题图 5题图【1】Would you like to go________ with me this weekend?【2】There is a________ in the park．【3】--How was your vacation on the________ ?--It was very exciting．【4】John and his sister________ ________ yesterday afternoon．【5】Mike________ ________ last weekend．