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It’s 4:30.
Xiaoming: Hi, Jack. School is over. Let’s go to the playground.
Jack: OK. What shall we do?
Xiaoming: That’s great.
An hour later (一小时后).
Xiaoming:
Jack: It’s 5:30.
Xiaoming: Oh, it’s late. My mum is cooking dinner for us at this time.
Jack: I think my mum is cooking too.
Xiaoming: Let’s go back home. Bye!
| A．It’s time to go home. |
| B．I like playing basketball. |
| C．What time is it? |
| D．Shall we play basketball? |
| E．I want to help her cook dinner. |
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
