搜索
Long long ago, in ancient China, there lived a farmer. He was worried that his seedlings (秧苗) grew too slowly.
One day, he went to the fields (田地) and pulled up the seedlings one by one. When he returned home, he was exhausted (筋疲力尽的). “I am tired out today,” he said to his family, “I helped the seedlings grow.”
His son was surprised. He hurried to the fields to see what had happened. It turned out that all the seedlings had shriveled up (枯萎).
1．The story happened in modern China. （2．The farmer was worried about his seedlings growing too slowly. （
3．He went to the fields and pulled up one of the seedlings. （
4．His son was very happy that the seedlings grew so fast. （
5．At last, all the seedlings shriveled up. （
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
