搜索
① Hi, I am Pencil Lulu. | ② Look, this is my home. It’s a red pencil box. | ③ We are good friends. |
④ This is Ruler Susu. She is nice. | ⑤ This is Pen Huhu. He is white. | ⑥ The lovely rubber is Dudu. He is blue and yellow. |
| A．bag | B．desk | C．pencil box |
| A．three | B．four | C．five |
| A．Lulu | B．Susu | C．Huhu |
| A．red | B．white | C．green |
| A．book | B．pen | C．rubber |
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
