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Hello, everyone! Let me say something about my new friend. His name is Jim. He is eleven. He comes from America. He comes to China because his father teaches English in China. Now Jim studies in our school. He speaks English well. But he needs help in Chinese. Chinese is hard for him. But he likes it very much. He also likes Chinese people and Chinese food. Dumplings is his favourite. He makes some friends here. After school, he often plays football. Playing football is his hobby. He is a cool boy.
My Friend | ||||
Name | Age | Nationality (国籍) | Favourite food | Hobby |
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
