Mr. Baker worked in an office. Once he was asked to a friend’s birthday party. His friends knew he had a wonderful voice (声音) and asked him
Two years later, Mrs. Baker’s father died. they got into trouble (麻烦) at once. But Mr. Baker wasn’t good at
One evening he went home happily and said, “My friends help me
“I’m sorry I can’t do it,” said the woman, “I have never made any shirts before, you know.”
“
“Well, let me try.”
The next morning, while Mr. Baker
Mr. Baker had a look at the shirt and asked in surprise, “Why does the new shirt have several holes in it?”
Pointing to (指着) the old shirt, she said, “Look! There’re some holes in your old shirt, too.”

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

