搜索
| Lost My red schoolbag. Three yellow pencils, three blue pens, five notebooks and an English dictionary are in it. My name is Peter. Call me at 845-7298 |
| Found A pencil box. A pencil, a ruler and an eraser are in it. A name “Kevin” is on the eraser. Please call Jenny at 890-1782 |
| Found A set of keys. Call Bob at 895-7385. |
1．Who lost a schoolbag? ________
| A．Kevin. | B．Jenny | C．Peter |
| A．a schoolbag | B．a set of keys | C．a pencil box |
| A．845-7298 | B．890-1782 | C．895-7385 |
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
