根据短文内容，完成下列各题。

    Fire can start in forests, homes and schools. It is very dangerous. What should we do when there is a fire? We should go outside quickly. And we have a fire drill at school every year.

    A fire drill is not a real fire, It helps us prepare for(为……准备) a real fire. This map tells us the way in a fire. We can follow the fire exit(出口) signs too. First, the fire alarm sounds. Next, we all line up and go out quickly. We leave all our things in the classroom. Then we walk down the stairs and go outside. We line up in the playground. Our teacher checks on the number of students. We should wait for the firemen to come.

∠ABC与∠MNP相比较，若顶点B与N重合，且BC与MN重合，BA在∠MNP的内部，则它们的大小关系是（　　）

某学者指出，限定宗法制内涵的前提是肯定宗法制源于原始时代后期的父系家长制，这自然就会将氏族与宗族混同一致来看待。其实，宗法就是宗族之法。该学者意在说明（  ）