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Tom’s grandfather bought Tom a bird last month. He liked it very much. He kept it in a small cage (鸟笼). He gave it water and food every day. However (然而), the bird wasn’t happy. It never sang songs. Tom was sad.
Yesterday Tom went to the park with his parents. He saw many birds there. They looked very happy and sang songs. Tom said to his mother “I think birds don’t like living in a small cage. I will take my bird to the park tomorrow. I’ll open the cage and let it go out to meet its friends. Then it will be happy and sing songs.”
1．Tom’s father bought a bird for him last week. （2．The bird sang songs every day. （
3．Tom went to the park with his parents yesterday. （
4．Birds in the park couldn’t sing songs. （
5．Tom wanted to open the cage and let the bird fly away. （
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
