B: Yes, please.
A: What do you need?
B: I need some cards.
A: How many cards?
B: Two red cards and three green cards.
A: What else do you need?
B: I need some gifts.
A: Yellow gifts?
B: No, the blue gifts.
A: Here you are.
B: Thank you.
1.Alice needs some _______. ( )
A.firecrackers | B.cards |
A.5 | B.3 |
A.yellow | B.blue |
A.brown | B.green |
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