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Linda: No, thanks. I visited the Summer Palace last week.
Chen Lin:
Linda: Well, maybe later.
Chen Lin:
Linda: The Great Wall? What is it?
Chen Lin:
Linda: How long is it then?
Chen Lin: It’s about more than 8,000 kilometres long. And it’s about 7 metres high and 5 metres wide. It was built more than 2,000 years ago.
Linda: Wow!
| A．That sounds great. |
| B．Shall we go to the Bird Nest (鸟巢)? |
| C．Do you want to go to the Great Wall? |
| D．It is the longest wall in the world. |
| E．Would you like to visit the Summer Palace with me? |
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
