题目

    When we were kids, my little sister Madison and I were the M&Ms—my parents' two daughters. ____36____ So it was quite a surprise when my mom and dad sat us down to let us know that baby number three was on the way when I was 10 years old. However, as soon as my brother Mac was born, he completely stole my heart and I have learned many things from having a young brother. ●  ____37____     Having a baby in your life means watching your parents endlessly change diapers (尿布), make bottles, and wipe spit-ups every once in a while. I was allowed to do those things and I39、读“某城市地租等值线分布图”(单位：元/平方米)，回答下列问题。 (1)图中的地租最高峰是    (用字母表示，下同)处，形成原因是     。 (2)图中D、M、G、F四地按照地租从高到低顺序排列为         。 (3)该城市区域地势状况为    ，判断理由是         。