搜索
There is an old man and many mice in a house. The old man has a cat. Every day the cat catches the mice and eats them.
One day the old mouse says, “All mice must come to my room this evening. We must find a way to deal with the cat.”
All the mice come. Many mice speak, but they don’t know what to do. At last, a young mouse stands up and says, “We must put a bell (铃铛) on the cat. When the cat comes near, we can hear the bell ring (铃响) and run away. So the cat can’t catch us.”
“Who can put the bell on the cat?” asks the old mouse. But no one answers.
1．There are many mice in the old man's house. （______）2．The cat eats one mouse every day. （______）
3．The old mouse is clever and finds a way. （______）
4．The young mouse is very brave and puts a bell on the cat. （______）
5．The old man has a cat. （______）
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
