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Grandpa:
Lily: Tell me about your school, please.
Grandpa: My school was small.
Lily:
Grandpa: Yes, I did. But there was no playground.
Lily: Did you have computer classes every week?
Grandpa:
Lily:
Grandpa: We listened to the teachers and read a lot.
Lily: Oh, the school changed a lot.
| A．There was only one small building. |
| B．How did you learn? |
| C．Did you often play sports at school before? |
| D．Wow, your school is beautiful. |
| E．No, we had no computer classes. |
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
