题目

It seems that the great desire among the young is to be popular. And once they achieve popularity, they want to keep it, improve on it, and expand it. Those are the years when you should be finding out who you are and what you stand for. But the desire to be popular can force you into looking and acting like everyone else. You can lose yourself in a sea of identical hairstyles and thinking styles. I was forced to think about popularity not too long ago in a talk I had with my daughter. Margy had to change schools when my busy work schedule made it necessary for me to move houses. I supp（1）计算：﹣|-2|﹣（2﹣π）0+（﹣1）2017（2）先化简，再求值：2（a+）（a﹣）﹣a（a﹣）+6，其中a=﹣1