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Today all umbrellas are very cheap. They are pretty, too. We have many pretty colours for you. The red umbrella is ten yuan. The yellow one is fifteen yuan. We have many nice sunglasses, too. The brown sunglasses are nice. You can try them on. They are so cool. But they’re not cheap. The purple ones are very cheap. Come and see us today!
1．All ______ are very cheap. ( )| A．glasses | B．umbrellas | C．gloves |
| A．five | B．ten | C．fifteen |
| A．sunglasses | B．shoes | C．scarves |
| A．Yes, it is. | B．Yes, they are. | C．No, they aren’t. |
| A．All sunglasses are very cheap. |
| B．The blue umbrella is ten yuan. |
| C．The brown sunglasses are nice. |
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
