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One day a crow finds a piece of meat. She picks it up in her mouth and flies to a tall tree. She is just going to eat when a fox sees her. He comes under the tree and says,“Hello! How beautiful you look today!” The crow is very glad to hear that. Then the fox speaks again, “I can see your beautiful face, I hear your voice is nice, too. Why don’t you sing a song?” The crow is very happy. She opens her mouth and begins to sing a song. When she opens her mouth, she drops the meat. The fox picks up the meat and goes away with it quickly.
1．The crow puts the meat in the tree.2．The crow and the fox are friends.
3．The fox thinks the crow is beautiful.
4．The crow wants to sing a song.
5．The fox listens to the crow and takes the meat 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
