题目

缺词填空 根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。（每空一词） Peter was the best table tennis player in his school and hardly ever lost a match. He hated losing anything. When he w   1   , he would feel really good. If he lost, he would feel terrible. It seemed to Peter that losing was the w  2   thing in the world . A new kid, Albert, came to Peter’s school. He was good at table tennis, too. Soon there would be a match b   3 Peter and Albert. Peter worked hard to get ready for the match, but Albert didn’t seem 下列运算正确的是（ ）A．x2+x2=x4B．（a-1）2=a2-1C．a2•a3=a5D．3x+2y=5xy