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A: Hi, Sam.
B: Hi, Jack. I’m looking at my photos.
A: What a lot of photos!
B: Yes, it is. I like taking photos. Please look at this one. It’s got a picture of the Great Wall on it.
A: Can you tell me more about the Great Wall?
B: It’s more than twenty thousand kilometres long.
A: It’s really long. And look at this one. You are playing with dolls.
B: Not very often.
A: Look at this one. What a big building!
B: Yes, it’s the UN building.
A:
B: It’s in New York.
| A．Is taking photos your hobby? |
| B．What are you doing? |
| C．Do you often play with dolls? |
| D．Where is it? |
| E．How long is it? |
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
