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I have got a friend. His name is Jack. He is fourteen. He comes from America. He studies in a primary school. There are three members in his family. Jack’s father works in a factory. He makes cars. Jack’s mother works in a hospital. She is a doctor. They can speak a little Chinese. Jack’s father likes drinking milk and eating bread. Jack’s mother likes cooking. She likes eating noodles. What about Jack? Ah, he likes dumplings very much.
1．Jack is an American boy.2．Jack has a brother.
3．Jack’s father works in a factory.
4．Jack’s parents can speak a little Chinese.
5．Jack’s mother likes eating bread.
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
