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Long long ago, there lived a farmer.He was worried about his seedlings growing too slowly.One day, he went to the farmland and pulled up the seedlings one by one.When he returned home, he was very exhausted(疲惫的)．“I helped the seedlings to grow.” he said to his family.His son was surprised.He hurried to the farmland to see what had happened.It turned out that all the seedlings had shrivelled up(枯萎)．
( )（1）The farmer can help the plants to grow by pulling them up.
( )（2）All the seedlings had grown up a little after the farmer left.
( )（3）The farmer was tired.
( )（4）The farmer was clever.
( )（5）We should learn from the farmer.
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
