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| I stopped long ago. Let me show you some photos. Do you often clean your room? Yes, I do. I am cleaning my room. |
Daming: What are you doing, Sam?
Sam: 1.
Will you help me?Daming: I'd love to. 2.
Sam: Not very often. I don't like doing housework. Do you?
Damig: 3.
I always clean my room. Do you often play computer games?Sam: Not really. 4.
Daming: Do you like taking photos?
Sam: Yes, I love taking photos. 5.
Daming: Oh, you took so many photos of China.
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
