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Fred liked fish very much. One day, he bought a big fish. Then he went to work. His son saw the fish and thought, “Very good! I can ask my friends to eat it.”
Fred came home in the evening. The fish was not there. His son said, “Oh, Dad, your cat ate the fish.” Fred got angry. He took the cat and his son to the shop and weighed (称重) the cat. Then he said, “Little boy, my fish weighs one kilo (千克) , and the cat weighs one kilo, too. My cat is here, then where is my fish?”
1．Fred caught a big fish one day.2．Fred wanted to ask his friends to eat the fish.
3．Fred came home and didn’t find the fish.
4．Fred thought(认为) the fish and the cat should weigh one kilo.
5．From the story, we know that Fred’s cat ate the fish.
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
