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Where Are My Sandwiches?
A man is going to see his friend. He takes some sandwiches with him because his friend's home is very far. On his way, he says to himself, "My friend is going to give me a very good meal." Then he throws them away. He goes on and comes to a river. There's no boat on the river. He can't cross it. He starts to go home. He is hungry now. And he tries to find his sandwiches. "Oh, my god. A dog has them. "He quickly goes up, but the dog runs away. He is still hungry and goes back home.
1．The man's friend's home is not far.2．He takes some sandwiches on his way.
3．He can't find a boat on the river.
4．The man catches the dog at last.
5．The man does not meet his friend.
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
