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My name is Wang Ying. I am from China. I am nine years old. I like to play ping- pong. This is my friend Alice. She is from Canada. She is ten years old. She likes to read books. This is Peter. He is from the U. S. He is eleven years old. He likes to read the newspaper. This is Lucy. She is nine years old. She is from the U. K. She likes to plant flowers.
| Name | Country | Age | Likes to do |
| Wang Ying | | nine | |
| Alice | | | |
| Peter | | | |
| Lucy | | | plant flowers |
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
