My name is Lucy. I have two good friends, Mary and June. June and I are twelve years old. Mary is thirteen years old. My birthday is November 11th．June's birthday is September 11th ．And Mary's birthday is January 18th. I like red, but they like green. Mary and June are in the same school. They have an Art Festival and a school trip every year, but I only have a Music Festival at my school.

如图，在平面直角坐标系中，点A的坐标是（1，1），如果将线段OA绕点O旋转135°，得线段OB，求点B的坐标？

中华文明源远流长，中国古代历史上有很多成就都走在前列，给中国和世界带来深远影响。结合所学知识，回答下列问题：

换偏旁，变新字。

论——____ ____   麻——____ ____