题目

阅读短文, 根据短文内容, 从短文后的五个选项中选出能填入空白处的最佳选项。选项中有一项为多余选项    Thirty years ago, I walked into a bakery and asked for some bread to sell. At that time. I was 12 years old. __1___She gave five loaves of bread and wished me good luck.     I took the bread and went out to sell them. It took me all day, but I sold them all. __2__I was the happiest boy in the world as I walked home that evening.   The next day, I went to a bicycle shop. I paid a deposit（定金） on a new bicycle. And then I started my如图所示，在正方体ABCD-A1B1C1D1的侧面ABB1A1内有一动点P到直线A1B1和直线BC的距离相等，则动点P所在曲线形状为（ ）A．B．C．D．