题目

第二部分：阅读理解（共两节，满分50分） 第一节  阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。（共20小题；每小题2分，满分40分） A        I knew something was wrong when I woke up on April 7th, 2008. My morn was cooking eggs. She never cooked eggs on a school morning. I dragged myself out of bed to see what terrible thing had happened. Nothing's wrong; I just feel like cooking, was the lie I was told.        I got on the school bus just in time to realize that Melissa wasn't there. When I got to sc可逆反应①X（g）+2Y（g）2Z（g）、②2M（g）N（g）+P（g）分别在密闭容器的两个反应室中进行，反应室之间有无摩擦，可滑动的密封隔板．反应开始和达到平衡状态时有关物理量的变化如图所示：下列判断正确的是（ ）A. 反应①的正反应是吸热反应B. 达平衡（Ⅰ）时体系的压强与反应开始时体系的压强之比为14：15C. 达平衡（Ⅰ）时，X的转化率为D. 在平衡（Ⅰ）和平衡（Ⅱ）中，M的体积分数相等