题目

阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一个完整的故事。I had justwalked in the door after dropping off the costume I had made for a friend'sdaughter when I noticed the light blinking on my answering machine. It was myfriend saying, I know you worked hard on the costume and it looks verynice, but Janet doesn't like all those decorations. Could you change them?Annoyed, Istarted to call her back-until I suddenly thought of Grandma' love and what shehad once done for me long ago when I visited her in New York City. It was inthe summer when I 小明同学发现一只老鼠在地球仪表面缓慢爬行，他把老鼠看作质点，在竖直面内抽象出如图所示模型：ON水平，OM竖直。在老鼠由M缓慢爬向N的过程中，球体始终静止不动。在此过程中，下列说法正确的是(    )A．老鼠所受的合力逐渐增大B．地球仪对老鼠的摩擦力逐渐减小C．老鼠对地球仪的压力逐渐减小D．地面对地球仪的弹力逐渐增大