I was feeling a little sad because my mother had lost her job. One day, while I
She was singing songs about love, believing yourself and keeping on
She noticed me. I walked over and
“I’m glad that I could help,” she replied, “Why are you so sad?”
“Well, my mom
“Did you notice the way you were walking? Your head was down.” she said. “
I looked at her, amazed at how she was encouraging me. “Why
She explained that she saw a lot of unhappy people in the world and she tried to cheer them up by playing music.
I smiled a little wilder, realizing that no difficulties could stop me from going on.

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

