某校思品学习小组以“聚集十二届全国人大代表三次会议”为主题开展研究性学习，他们展示了一张全国人大代表结构表：

从该表格中我们可以看出（  ）
①在我国，人民是国家的主人                ②人民代表大会是我国一项根本政治制度
③人民代表具有广泛的代表性                ④我国社会主义物质文明建设成果显著

下列各句中划线的词语使用正确的一句是 （ ）

       We all have our own ways of sharing our life experiences with others.
Photographers use cameras，artists use brushes, musicians use songs and writers use stories. Spencer Johnson's story Who Moved My Cheese? shows changes exist in(存在于) our life. Life changes and so we do. We must change ourselves to face the changing environment, or we will fail.
       Just look at the cycle(循环) of the seasons. Trees bud(发芽) in spring and in summer their leaves turn green. In autumn, their leaves start to fall onto the ground. When winter arrives, there are no leaves on trees. Next spring the cycle begins again. Since we know there are cycles in nature, we can prepare for them. We know it is colder in winter and hotter in summer, so we can dress properly.
Since we accept the cycles of nature，we should also accept the changes in our life.
    We can prepare ourselves for changes by becoming more flexible(灵活的). We can regard the changes in our life as chances. As we keep changing ourselves, we can keep up with the changes in our life.