In most parts of the world there are four seasons. In different seasons people w【1】different clothes and do different things. For example, in summer the weather is hot, so people usually wear cool clothes and do things l【2】 swimming, boating or surfing. But near the polar regions（两极地区）there are only two s【3】: winter and summer. In winter, nights are long. For more than two months you can't see the sun. In summer, days are long and the sun is a【4】 in the sky. There are no nights.

The people living near the North Pole are called Inuit. In summer they live in tents（帐篷）and catch deer for f【5】. In winter they live in small round snow houses. They can build a snow house in two hours. They travel around snow using dogs to carry their things. They make holes in the ice and catch fish and seals（海豹）. They eat much meat but not m【6】 vegetables.