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School begins from September. We study at school from September to January. Then we have our winter vacation. In September we have Teachers' Day and Mid-Autumn Day. Our National Day is in October. American Thanksgiving is in November. Christmas is in December. And New Year's Day is in January. Each month has one or two special days.
1．We study at school for five months.2．Teachers' Day and Mid-Autumn Day are in the same（相同的）month.
3．0ur National Day is in December.
4．New Year's Day is in February.
5．Each month has two special days.
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
