题目

根据短文内容填入所缺单词的正确形式, 使短文意思连贯, 结构完整.   Jacky looked at the calendar with ____1____（兴奋）. In a week’s time she would no longer be a t_____2_____! She was turning twenty and she was going to have a ____3____ on Saturday night with all her friends to c____4____ it. It was going to be so much f_____5____! And on Sunday she was going to her first wedding. She didn’t know the b_____6____ but the bride was her best friend’s sister. Jacky was going to help them decorate the hall where they would have the reception. Suddenly Jacky rem已知F是抛物线y2=4x的焦点，A，B是抛物线上两点，△AFB是正三角形，则该正三角形的边长为    ．