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Peter and Linda are good friends. Last Saturday they went to the Great Wall. It's old and long. It's about 2000 years old. It is famous in the world. It was their second time（次）to go there. It was a sunny day that day. They saw many things there. Linda took many pictures. They were tired but happy that day.
1．Last Sunday Peter and Linda went to the Great Wall. （_______）2．The Great Wall is old and long. （_______）
3．It was their first time to go there. （_______）
4．That day was sunny. （_______）
5．They were happy that day. （_______）
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
