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At six years old, I dreamed of becoming an artist. My mom knew this, so she gave the perfect gift to a first-grade artist like me. My friends and I called them “Stampy Markers (马克笔)”. They quickly became my treasure.
Unfortunately, my little sister thought they were amazing, too. For three days in a row, she would ask to play with my markers. However, each time, she would receive my firm “No”. Finally, maybe realizing it was impossible to take them from.me, she stopped asking. And I was able to leave them out in my room when I went to school, certain that she understood they were forbidden to her.
The first day that I didn’t hide them, I got home from school and went upstairs to my room. Right away, I saw that my markers were not where I had left them. My rainbow-colored treasures were gone!
Suspecting that my sister might have something to do with their ds appearance, I searched the entire house for her. Finally, I found her in the basement and, sure enough, she was working on some rainbow drawing with my markers surrounding her.
“Hey! Why did you take them while I was away?” I started yelling at her.
“Sorry...but I...” she murmured.
Before she could make any explanation, I grabbed the markers—at least the ones I could reach—and ran back up to my room, slamming the door shut behind me. I sat there for at least half an hour, but it seemed like much longer. Then, I heard my sister’s footsteps coming up the stairs.
I opened my mouth, about to demand that she give the rest of my markers back, when I noticed a folded piece of paper being pushed underneath the door.
Once it reached my side of the door, I picked it up. As I read the words written on the cover, my anger quickly fell away.
What was on the paper was something that I would never forget.
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I opened the door, reached out to her and gave her a hug.
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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
