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I’m Bob. I’m eleven. I’m from Canada. I have short yellow hair and blue eyes. I’m tall and thin. I like Math. I have a good friend. She is a girl with long curly hair. Her name is Emma. She’s ten. She is very quiet. She comes from America. She likes music and sports. We’re in the same class. We often do sports together. We’re very happy.
1．Bob is from Canada.2．Emma is tall and thin.
3．Emma comes from America.
4．Emma is a girl with long curly hair.
5．Bob likes music and sports.
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
