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B: It's a photo of the Tianshan Mountain. It's very long.
A:
B: It's about two thousand kilometres long.
A:
B: It's in Xinjiang.
A: Is it in the south?
B:
A: Tell me more about Xinjiang.
B: It's very big. It's got about 25 million people.
A: Wow!
B: I will visit Xinjiang someday.
| A．How long is it? |
| B．No, It's in the west. |
| C．What's this? |
| D．Where is it? |
| E．What a big city! |
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
