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( ) The little boy was hot. He took some leaves from the tree and made a big fan.
( ) Ten years later, the man came back again. He needed a boat to go sailing. The tree gave him his trunk to build a boat.
( ) After many years, the old man returned. The tree had nothing left but his old stump.
( ) Once there was a huge apple tree. A little boy loved to play around it.
( ) The little boy became a young man. He needed a house. So the tree gave him all his branches to build a house.
( ) The old man was too tired. He sat down against the stump and had a rest.
( ) The little boy was hungry and thirsty. The tree gave him an apple.
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
