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Hello, I’m a box. My name is Lost and Found. Look!
| Lost: Hello! I lost my ID card. I must find it. If you find it, please call me. My telephone number is 497-5621. Thank you. Mike |  |
| Found: Hi! Is this yellow jacket yours? I found it in the school library. If it is yours, please ask Miss White for it. Linda |  |
| Lost: Hello! My friend Lisa lost a set of keys. If you find it, please call me at 694-5831. Thanks. Helen |  |
1．Mike’s telephone number is ________.
| A．495-5621 | B．497-5621 | C．497-5121 | D．495-5621 |
| A．black | B．white | C．yellow | D．red |
| A．Mike. | B．Linda. | C．Lisa. | D．Helen. |
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
