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Cindy is visiting Lily's home.
Lily: Cindy, welcome to my home!
Cindy:
Lily: Thank you!
Cindy: Wow!
Lily: It's a robot.
Cindy: What can the robot do?
Lily: It can walk and talk.
Cindy: Everything?
Lily: Yes.
Cindy: Will they do our homework too?
Lily:
| A．They will do the housework. |
| B．No, they won't. |
| C．What's that? |
| D．Your home is big and beautiful. |
| E．One day, robots will do everything. |
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
