在磁感应强度为B₀、方向竖直向上的匀强磁场中，水平放置一根长通电直导线，电流的方向垂直于纸面向里．如图所示，a、b、c、d是以直导线为圆心的同一圆周上的四点，在这四点中（   ）

把多项式ax²+2axy+ay²分解因式的结果是____．

请将你最喜欢的一部文学名著推荐给大家，写出书名、作者和推荐的理由（可从作品的内容、主题、艺术价值和自己的阅读感受等方面来推荐）。

    I'm Peter. There are four people in my family. They are my father, my mother, my grandfather and me. I'm twelve. My birthday is on 15th March. My parents are both doctors. They help people. Their birthdays are both in May. My grandfather is old. He is sixty-five. His birthday is on 9th June. He likes reading. I like reading too. I want to be a teacher in the future. I want to teach Chinese in a school.