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Amy: 1．
Tom: We fly the flag and we sing songs.
Amy: 2．
Tom: No, we don't. We have a big family dinner on Thanksgiving Day.
Amy: Thanksgiving Day?
Tom: Yes, it's my favourite festival.
Amy: 3．
Tom: Well, after Thanksgiving dinner, we watch a big football game on TV.
Amy: 4．
| A．Can you tell me more about Thanksgiving Day? |
| B．What do you do on Flag Day? |
| C．Do you have a big family dinner? |
| D．That sounds great. |
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
