

The Picture of Peace
When Mike was seven, he knew his dream was to be a photographer. He kept working on it for years. Recently, he was trying to take a picture of a sunset(日落) to enter the school
“Mom, it has been cloudy these days. I don’t think I can get this picture!” Mike complained.
“Why not use one of your photos on the computer?” suggested Mom.
“I can’t—the rules say the photos have to be taken with a traditional camera. We hand in a roll of film, it gets developed(冲洗胶卷) , and we
“Why is a sunset so important? ” Mom asked.
“The
Zach, his six-year-old brother came out of the bedroom. “Hey, you want to take a picture of me? Look! ” He put both arms over his head.
“Not right now,” said Mike, laughing.
That very afternoon, Mike felt excited when he saw clear skies. He carefully lined up his shot(镜头) and waited
“That’s it! Perfect!” he shouted cheerfully.
The next morning, Mike noticed he could take one more picture to complete the roll of film, so he walked into Zach’s room. Zach was
A week later, Mike got the photos. The sunset picture was the one he was most
Then, he looked through the other photos. Suddenly, he stopped. His eyebrows(眉毛) rose as he
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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

