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Here’s a postcard from my cousin Dagang. He is in New York now. He went there for a holiday with his father last week. They went there by plane. They live near a big park. It’s big and beautiful. Last Friday they walked in the park and bought this postcard. Next Monday they will go to San Francisco by bus. They will come back to China next Thursday.
1．Dagang and his father are in New York now.2．Dagang and his father went to New York by train.
3．Dagang lives in a park with his father.
4．Dagang walked with his father in a park last Friday.
5．Next Thursday Dagang will go to San Francisco with his father.
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
