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| A．It can catch flies |
| B．It lives in a river |
| C．It can swim and it has a tail. |
| D．Is it in a tadpole? |
F. It also has legs.
Jack: Mum, is this a fish ? 1.__________________ .
Mum: No, it isn’t . Look carefully .2.________________________
Jack: Really? I see .3. _____________________________
Mum: That’s right. The tadpole was small and black when it was brown .
Jack : 4._______________________ .It’s so interesting .
Mum: Finally it will be a green frog. It has a big mouth. 5.________________________ .
Jack : Where does it live?
Mum:6._____________
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
