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A crow was thirty. He found(find过去式) a bottle with a little water in it. But the neck of the bottle was too long, and the crow couldn’t get the water. The crow thought(think过去式) and thought, and then he had a good idea. He put some pebbles(鹅卵石) in the bottle, and the water raised up. Now he could drink the water. What a clever crow!
1．The crow wanted to find some food.2．There was a lot of water in the bottle.
3．The crow couldn’t get the water at first because the neck of the bottle was long.
4．“Raise up”means “上升” in Chinese.
5．The crow was very foolish.
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
