某汽车库的建筑面积为5100m2，停车数量为150辆，该汽车库的防火分类应为（）。

Going on holidays is best choice for the Europeans to relax themselves, especially in the UK. However, much has changed during the past decades(几十年).
One of the most traditional British holidays was the “seaside holiday”. Families got on a train or into a car and traveled to seaside towns nearby to sunbathe on the beach, buy ice-creams and eat fish and chips and so on.
In the late 1970s, more and more British people started traveling to other countries in Europe for their summer holidays (July-August) because the weather wasn’t very good, even in summer. The “package holiday” was particularly popular with most families.
In the 1980s and 1990s, young people in the UK became wealthier, so many of them traveled to countries all over the world for their holidays.
These years, especially after the world financial crisis(金融危机), most British people can not afford to spend their holidays abroad. They again begin to choose to stay in their own home and go on a few day trips rather than spending money on hotels. They call this sort of vacation a “staycation”.
任务：请阅读上面短文，根据短文内容完成下面表格中的有关信息。

Time	Kind of holiday	Reason
Before the late 1970s	小题1:________	It was a tradition.
In the late 1970s	Package holiday	小题2:______
小题3:__________	Overseas holiday	Young people became wealthier.
These years	小题4:________	The world financial crisis.