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Zhang Tong:
Wu Lei:
Zhang Tong: When is it?
Wu Lei:
Zhang Tong: Do you often plant trees on that day?
Wu Lei:
Zhang Tong: Where do you often plant trees?
Wu Lei:
Zhang Tong: Great! Can I plant trees with you next Tree Planting Day?
Wu Lei:
| A．On my grandpa’s farm. |
| B．Hi, Wu Lei. |
| C．Tree Planting Day. |
| D．Of course you can! |
| E．Yes, I often plant trees with my family. |
| F．It’s on March 12th. |
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
