– How do you study _______ a test?

-- I study         working with a group.

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.

据《左传·昭公七年》:“天有十日,人有十等。……王臣公,公臣大夫,大夫臣士,士臣皂。”这表明周代社会(     )