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Yuanyuan: Mom, let’s colour and say.
Mom:
Yuanyuan: Mom,
Mom: I can see some balloons.
Yuanyuan:
Mom: I like red. Red is for love and luck(幸运).
Yuanyuan: Good. (5 minutes later五分钟后) Mom,
Mom: Oh, it’s red. Yuanyuan, you are great.
Yuanyuan:
| A．what can you see |
| B．What colour do you like? |
| C．Thank you, Mom. |
| D．what colour is this balloon |
| E．OK. |
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
