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Peter and his father often travel together. They travelled to many places. They went to China last year. They went to the Great Wall by bus. They arrived there at ten o’clock in the morning. The wall is very long and very old. They spent(花费) one hour walking on the wall. There were lots of people. They took many beautiful pictures of the mountains. Peter took a picture of his father. They were very happy.
1．Peter and his father went to China last year.2．They went to the Great Wall by car.
3．They walked on the Great Wall for two hours.
4．They took many pictures of the people.
5．Peter often travels with his father.
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
