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A. Is it big?
B. Is it a butterfly?
C. Is it on the window?
D. What colour is it?
A. Is it big?
B. Is it a butterfly?
C. Is it on the window?
D. What colour is it?
A: Good morning.
B: Good morning.
A: Look. Is this a fly?
B: No, it isn't.
A:________
B: Yes, it is.
A:________
B: It's blue and green.
A: ________
B: No, it's small.
A: Where is it? ________
B: No, it's on the door.
A: Can the butterfly fly.'?
B: Yes, it can.
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
