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Lucy: No, it isn’t.
Sarah: Mary, is this your bag?
Mary: Yes, it is.
Sarah: What’s in it?
Mary: A book.
Sarah: What colour is it? Is it blue?
Mary: No, it isn’t. It’s red.
1．Is the bag Lucy’s? ( )
| A．Yes, it is. | B．No, it isn’t. |
| A．Mary’s. | B．Sarah’s. |
| A．A book. | B．A knife. |
| A．No, it isn’t. | B．Yes, it is. |
| A．Red. | B．Blue. |
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
