搜索
Mr Green has a cat and a dog. The cat is big and the dog is small. He likes them very much. Last Sunday, Mr Black come to see him. He saw two holes (洞) in the door, a big one and a small one. He asked, “Mr Green, why are there two holes in the door?” “Let the dog go through the small hole, and the cat go through the big one,” Mr Green answered. “But, can they go through just one hole?” asked Mr Black. “How can the big cat go through the small hole?” said Mr Green.
[[QOrDeR]]Is Mr Green’s cat small?【小题2】When did Mr Black come to see Mr Green?
【小题3】What did Mr Black see in the door?
【小题4】Why were there two holes in the door?
【小题5】Do you agree (同意) with Mr Green?
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
