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Canada is a huge country, but it has a small population (人口). Not many people live in the countryside, but many enjoy their summer holidays there. Some people have summer houses near lakes and rivers. Others enjoy camping in national parks. There are thirty-nine national parks in Canada.
Winter is long and very cold in most parts of Canada, so Canadians do lots of winter sports. The most popular are ice skating and ice hockey. Many families make ponds in their gardens and let them freeze. Then they can skate on their own ice rink!
1．Most people in Canada live in cities.2．Some people have summer houses near mountains.
3．People in Canada usually stay at home during the long winters.
4．Many families have their own ice rink!
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
