题目

“To put yourself in someone else’s shoes” means to put yourself in someone else’s condition, especially a bad one. Have you ever tried to put yourself in someone else’s shoes before? If you have, let’s share the story together.It was a true story in an African country. The white government had a public rule. It was that black people could not go to some places that white people could. White people tried to stay away from black people because they thought white people were more excellent than black people.One day a white girl from America, Becky, lay on the beach to take a break fro已知x，y满足y+|x-2|≤3y≥2，不等式x2+9y2≥axy恒成立，则a的取值范围为a≤152a≤152．