如果待排序序列中两个数据元素具有相同的值，在排序后它们的位置发生颠倒，则称该排序是不

LJ2200L的打印速度是多少（）.

A.21页/分钟

B.22页/分钟

C.20页/分钟

D.25页/分钟

I love to write! Ever since I was a five-year-old girl, I wrote stories in my notebooks and on small pieces of paper. I told stories to my friends. As a grown-up, I have written over 100 books! That’s a lot! As a teacher, it’s my goal to encourage all of my students to love to write.

Writing is easy if you’re careful enough, I told them. Everyone I meet is a possible character.

Everything I see or do is a possible scene in a book. Start looking around you. You’ll be amazed at what you discover.

Anyone can be a writer. You just put your pencil on your paper and write what you like to read, step by step:

● Create great characters. If you know your characters well, they’ll write the story for you.

● Interest the reader right at the beginning. You can start your stories with dialogue or action. If you can make the reader ask questions, then he has to keep reading to find out the answers.

● Follow the steps. The steps for every story are almost the same: Introduce the characters and the conflict(争端);things get worse; all seems lost; the hero saves the day!

● Balance is the key.

Remember, when writing, it doesn’t hurt to add some humor(幽默).

小题1:What did the writer begin to do when she was five years old?

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小题2:What’s the writer’s goal as a teacher?

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小题3:How many steps are mentioned about writing according to this passage?

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小题4:.Does the writer think it hurts to add some humor when writing?

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小题5:What does the passage mainly talk about?

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点A为周长等于3的圆周上的一个定点．若在该圆周上随机取一点B，则劣孤的长度小于1的概率为________

一个正方体的棱长是a厘米，那么它的所有的棱长的总和是______厘米，它的体积是______立方厘米．

下图是伦敦博物馆收藏的1849 年用于农耕的蒸汽引犁模型。下列对模型所反映的历史信息解读正确的是

A ．它的发明者是哈格里夫斯

B ．它以内燃机作为动力

C ．它标志着工业革命的开始

D ．它反映了工业革命的成果运用到农业生产领域