这节历史课侧重于讲解20世纪的重大事件。

The ___history class focuses on the major events of the 20th century.

历史提供了来自过去的宝贵教训，这些教训塑造了我们的未来。

___History provides valuable lessons from the past that shape our future.

城堡拥有悠久的历史。

The castle has a long ___history.

他的医疗记录显示他有心脏病家族史。

His medical records show he has a ___history of heart disease in his family.

这台笔记本电脑有频繁死机的历史，所以我换了台新的。

This laptop has a ___history of frequent crashes, so I bought a new one.