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The winter holiday (寒假) is coming. Sarah is going to take a trip with her family. They are going to Yunnan. First, they’re going to visit Sarah’s aunt. She lives in Kunming. Then, they are going to the Dianchi Lake. Next, they are going to climb the Xishan Mountain. They are going to Yunnan by plane. Sarah is very excited.
1．Sarah is going to take a trip with her family.2．First, they are going to visit Sarah’s grandparents.
3．Then, they are going to see a film.
4．Next, they are going to swim in the Dianchi Lake.
5．They are going to Yunnan by plane.
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
