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Canada Day
Since 1982, July 1st has been officially known as Canada Day. Canadians of all ages take part in this festival across the country.
Canada Day is the year's biggest national party. In many towns and cities, the government organizes a lot of events, often outdoors. These include parades（游行）, concerts, festivals,
firework displays and ceremonies for new Canadian citizens（公民）.The celebrations often have apatrioticmood. Canada's national flag, a symbol for Canada Day, can be seen everywhere and a lot of people paint their faces red and white, which are Canada's national colors. The celebrations in Ottawa, Canada's capital city, are especially grand and exciting.
In the province of Quebec, many home rentals（租赁）start on July 1st and last for exactly one year, and many people in Quebec spend Canada Day moving from one house to another. So in Quebec, Canada Day is also known as Moving Day.
Many organizations, businesses and stores are closed this day. Only some bookstores, hospitals and gas stations may be open. Post offices are closed, too. As Canada Day falls in the Canadian summer holiday period, all schools are closed as well. In some areas, special services are provided for large events. The concerts, parades and festivals may cause some traffic jams.
2NO + O2在体积不变的密闭容器中反应，现有以下几种