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Hello! My name is Guigui. I have a good friend. Her name is Huahua. She is ten years old. I’m ten years old, too. She is from Nanbai. She’s tall and thin. She is friendly. Her shoes are blue. She has a big schoolbag. It’s black and white. It’s cute. There are two Chinese books, three notebooks and a storybook in it. She likes her schoolbag.
1．Huahua is a girl.2．Huahua is short and thin.
3．Guigui and Huahua are 10 years old.
4．Huahua’s schoolbag is not small.
5．Huahua has two Chinese books, three notebooks and a toy in the schoolbag.
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
