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B: No, Mum. 1．
A: A storybook? Is it interesting?
B: Yes, it is. 2．
A: Where are your two sisters?
B: Linda is writing a letter to her friend. 3．
A: What toy is she playing with?
B: 4． It’s soft and smooth.
A: 5．
B: No, he isn’t. He’s cleaning the bicycle in the garden.
| A．I like reading it very much. |
| B．She is playing with a toy bear. |
| C．Jane is playing with her toys. |
| D．I’m reading a storybook. |
| E．Is your father watching TV now? |
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
