题目

毕业派对上, 大家分享小学时期难忘的旅行。请根据PPT上的信息补全文章, 并仿写。 （1） Mike: I went to Uncle Sam's farm last weekend. I went there by bus. I picked vegetables and . And we had a picnic on the farm. Uncle Sam played pipa for us. That was so great.John: Last month, l went to Xinjiang. l went there I climbed Tianshan Mountain and I was so tired. I sang and danced with my friends. I , too. They were so delicious.Chen Jie: I went to London . I went there by plane. I learned English there. l saw English films and in London. It was a wonderf把抛物线y＝x2－1先向右平移1个单位，再向下平移2个单位，得到的抛物线的解析式为( 　 )A. y＝ (x＋1)2－3 B. y＝ (x－1)2－3 C. y＝ (x＋1)2＋1 D. y＝ (x－1)2＋1 B 【解析】根据二次函数的平移的性质“左加右减，上加下减”，可知把抛物线y＝x2－1先向右平移1个单位，再向下平移2个单位，得到的抛物线的解析式为y＝ (x－1)2－3. 故选：B.