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Tom: Hi, Amy!
Amy: OK.
Tom: Yes, I do. Stop and wait at a red light.
Slow down and stop at a yellow light. And…
Amy:
Tom: You are right. Look!
Amy: OK.
Tom: Usually I go to school on foot. Sometimes I go to school by subway.
Amy: Look! The bus is coming. Bye.
Tom: Bye.
| A．How do you go to school? |
| B．Let's go home. |
| C．It's a green light. |
| D．Do you know the traffic lights? |
| E．Go at a green light. |
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
