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Christmas is a western (西方的) festival. People don't work. Children don't go to school. They have a two-week (两个周的) holiday. They often travel. They send (寄) cards to their friends. They also help the poor (穷人). Parents often pretend (假装) to be Santa and give presents to their children. They tell stories about Christmas.
1．Christmas is an eastern(东方的) festival.2．Children don't go to school on Christmas.
3．People often travel and send cards to their friends.
4．Presents to the children are from their parents.
5．They tell stories about the Spring Festival.
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
