完形填空
About a week ago, when I was playing basketball at our local park, I noticed a small group of boys picking on a smaller, skinnier(皮包骨的) boy. They were 1 him names and even pushed him to the ground and kicked dirt in his face. 2 I saw that, I walked over to the group.
I stepped 3 them and the smaller boy, and asked them politely what this boy had done worthy （值得）of 4 they were doing to him. One of the boys replied, "He's weird." At that, I asked one of the boys if he thought his friend was weird, and the 5 was" No." So, I asked another boy what the word "weird" 6, andhe said, " Different." That was my cue（暗示）. I told them that everyone is 7, and that they all looked just as different to the other boy as he did to them. They all stood 8for a moment, and then the most amazing thing happened. One of the boys helped the small boy off the ground and then said sorry to him. He 9 to let him play with them.
I thanked the boy for being so 10. As I looked around, I realized that there were dozens of other people at the park 11no one else had stopped to help this boy. I felt happy that the boy was strong enough to stand up against his friends to 12 someone in need, but I felt sad that 13 else had even taken a second look.
I hope that my action helped them 14 that they could have made a difference with a little15, and maybe next time they will be the ones who choose to help.
这个三角形的构造法则为：两腰上的数都是1，其余每个数均为其上方左右两数之和．事实上，这个三角形给出了（a+b）n（n为正整数）的展开式（按a的次数由大到小的顺序排列）的系数规律．例如，在三角形中第三行的三个数1，2，1，恰好对应（a+b）2=a2+ab+b2展开式中各项的系数；第四行的四个数1，3，3，1，恰好对应着（a+b）3=a3+3a2b+3ab2+b3展开式中各项的系数等等．根据上面的规律，（a+b）4的展开式中各项系数最大的数为（ ）