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Mr. Black has two cats. One is big and the other is small. He likes them very much.
One day his good friend Mr. Green comes to see him. He is very surprised. He finds two holes (洞) in the door, a big hole and a small one. He says, “My dear friend, why are there two holes in the door?” “To let them in and out.” Mr. Black answers. “But why are there two holes?” asks his friend. “How can the big cat go through the small hole?”
1．Mr. Black has ______. ( )| A．two small cats | B．two big cats | C．a big cat and a small one |
| A．Mr. Black | B．Mrs. Black | C．the cats |
| A．the big cat | B．the small cat | C．the two cats |
| A．the small cat | B．the big cat | C．the two cats |
| A．The big hole | B．The small hole | C．The big door |
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
