我9点钟有历史课。

I have a history class at 9 o'clock.

我们有一节历史课。

We have a history class.

艺术课，化学课，历史课或数学课已经开始。

Art class, chemistry class, history class or maths class have started.

我喜欢星期一因为我有上体育课和历史课。

I like Monday because I have P. E. and history.

学校的历史课很少提及阶级对抗与工潮的历史。

The history of class conflict and labor unrest is seldom taught in schools.