There are many good students in the U.S., of course, but there are also quite a few who like to "argue for the sake of arguing," sometimes at ridiculous length, to attract the attention of the teacher.
在美國，好學生固然多，但也有部分學生是為表現「叛逆精神」、或吸引教師注意，「為辯而辯」，有時甚至強詞奪理、幼稚可笑。