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Amy: Hi, I’m Amy. I’m ten. I’m friendly. This is my blue schoolbag. It’s heavy. I have five Chinese books, two maths books and ten notebooks in it.
Wu Binbin: Hi, I’m Wu Binbin. I have a new friend. His name is John. He is nine years old. He is tall and strong. His schoolbag is black. He has two storybooks and three keys.
Name | Age(年龄) | Character（特征） | Colour of schoolbag |
Sarah | 12 | green | |
Amy | friendly | ||
9 | black |
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
