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On a sunny day, Small Bear went boating with Papa. They bought hats first. Papa got a small hat for his big head. Small Bear got a big hat for his small head. Papa's hat was too small.Small Bear's hat was too big! They exchanged(交换) hats. Just right! Then, they came to the boat. It had two seats. Papa sat on the small seat. Small Bear sat on the big seat. Papa Bear was too heavy. Small Bear was too light. They exchanged seats. Just right! After boating, they had lunch nearby. Papa got a small bowl. Small Bear got a big bowl. The food in the small bowl was too little for Papa. And the food in the big bowl was too much for Small Bear. They exchanged bowls. What a good meal!
1．Small Bear and Papa went boating on a cloudy day.2．Small Bear got a big hat for his small head at first.
3．The boat had two seats. One is big. The other one is small.
4．The food in the big bowl was too little for Papa.
5．They exchanged the hats, the boats and the bowls.
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
