（Ⅰ）当a=1时，求不等式f（x）＞0的解集；

（Ⅱ）设a＞﹣1，且存在x₀∈﹣a，1），使得f（x₀）≤0，求a的取值范围．

根据短文理解，选择正确答案填空。 

    Jim is a junior high school student. He gets up 16:30 every morning. His home is near his school. He 2home after breakfast. He goes to school on foot. This is good for his 3. He has four lessons in the morning. He has lunch at home. After lunch he goes to school again. In the afternoon, Jim has lessons . He likes English and PE lessons. He has PE lessons on Tuesday and Friday. He is good at4football and basketball. He is also good at the high jump. His PE teacher likes5 very much. He often plays football with his classmates after school.

民居的特点受自然条件和生产方式的影响，读图完成下列小题。