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Daming: 1．
Simon: OK. Let's go.
Daming: What a big building!
Simon: 2．
Daming: Yes, please.
Simon: I want to show you the present from China.
Daming: 3．
Simon: It's a train.
Daming: It's so beautiful. 4． Can I?
Simon: Yes, of course. It says “From the People's Republic of China, 1974.”
Daming: 5．
| A．What is it? |
| B．Yes, I do. |
| C．What a fantastic present! |
| D．Do you want to go inside? |
| E．I want to take a photo. |
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
