题目

 完形填空     Friends are very important in our everyday life. Everyone  _ 1     friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh, and do things with.    2   , sometimes we need to be alone. We don’t always want people     3   . But we would feel lonely if we never had a friend.     No two people are just the same. Friends    4    don’t get on well. That doesn’t mean that they no longer like each other. Most of the time they will make up (言归于好) and become     5    again.     Sometimes friends m设函数.（1）当时，求不等式的解集；（2）若对任意，不等式的解集为空集，求实数的取值范围。