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Yangyang: Hi, Lingling!
Lingling: Oh, I went back to Hangzhou. I had a lot of fun there.
Yangyang: When did you come back from Hangzhou?
Lingling:
Yangyang: What did you do in Hangzhou?
Lingling:
Yangyang:
Lingling: Did you like the animals?
Yangyang:
| A．Yes, I like them very much. |
| B．I came back last Wednesday. |
| C．I went to my uncle’s farm. |
| D．What did you do this summer? |
| E．I visited the West Lake and some museums. |
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
