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| A. Don’t forget the stamp. B. How are you today? C. We write on the left. D. Sure. E. Write the date first. F. I’m writing a postcard here. |
B: I’m great. What are you doing here?
A: 2． What about you?
B: I want to send a postcard to my friend.
A: Oh, I see.
B: Can you tell me how to write a postcard?
A: 3．4．Then write what you want to say to your friend. You should write your address on the right and 5．
B: Oh, I see. Thank you very much.
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
