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B: Hello, Sarah.
A: Oh! My father bought me a new computer. I used it during my holiday. I like it so much!
B: Wow!
A: Well, I can do many things.
B: Can you play chess on it? I know you enjoy playing chess.
A: Yes!
B: Good for you!
| A．What can you do on your computer? |
| B．I played chess on it in the afternoon during the holiday. |
| C．What did you do during your holiday? |
| D．Nice to see you, too. |
| E．I can email my friends, read news and so on. |
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
