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Mary, Jim, Linda and Bill put their sweaters on the table. The sweaters are white, blue, red and black. We know the boys’sweaters are not red and the girls’sweaters are not black. What colour is Mary’s sweater? I don’t know. But I know her sweater is not blue or red.Bill says, “My sweater is not black.” Do you know what colours their sweaters are？
[[QOrDeR]]There are ________ sweaters on the table. ( )| A．five | B．four | C．six |
| A．blue | B．red | C．white |
| A．red | B．black | C．blue |
| A．blue | B．white | C．red |
| A．black | B．blue | C．white |
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
