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Duoduo: Oh, it's my robot dog.
Qiqi: Wow! It's so cute. What can it do?
Duoduo:
Qiqi: Great! I also want a robot.
Duoduo: Yes, they can. One day, they will do everything.
Qiqi: Really?
Duoduo:
Qiqi: Cool. Then (那么) they will help my mum wash the clothes.
Duoduo:
Qiqi: Then they will be our teachers. How about the homework?
Duoduo: Ha ha...
| A．Can robots talk with us? |
| B．Yes. Robots will do the housework. |
| C．It can run fast and jump high. |
| D．They won't help us do our homework. |
| E．And they will help us learn. |
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
