某化石采集队在甲、乙、丙三个不同地层内挖掘到许多化石，记录如下表．由此可初步推断这些地层按地质年代由远到近排列应是（　　）

读“北京，武汉，广州，哈尔滨四个城市的气温曲线和降水柱状图”并完成．

读短文，根据文章内容判断句子正误。

    My school is very beautiful. It is in Dianjun District, Yichang City, Hubei Province. Do you know it? It is Dainjun Primary School. I like my school very much.

    There is a big playground in my school. We have P.E. class on the playground and we often play sports on it, too. Our teaching building has five floors. My classroom is on the fifth floor. It is big and clean. The computer rooms are on the third floor. There is a library on the second floor. There are many books in the library. I often read books here. There are some music rooms and art rooms in the teaching building, too.

    The teachers in my school are very kind. The students are very polite and smart. I am happy in my school.