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Ruby: I went to a small town. My grandparents live there.
Lily: Really?
Ruby: It's in the west of Hangzhou. It's small but it's very beautiful. I go there to visit my grandparents every year.
Lily:
Ruby: It was Christmas Day. I had a Christmas party with my friends. I was very happy.
Lily: That sounds very nice. I hope I can visit some beautiful towns in China, too.
Ruby: Maybe you can go with me next year!
| A．Where is it? |
| B．Where did you go? |
| C．What did you do there? |
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
