题干

一个盒子内装有大小、形状相同的四个球,其中红球1个、绿球1个、白球2个,小明摸出一个球不放回,再摸出一个球,则两次都摸到白球的概率是(     )

A:12

B:14

C:16

D:112

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答案(点此获取答案解析)

C

同类题3

还原句子。根据材料内容,从方框中选择恰当的句子填入文中空缺处,使短文意思通顺、内容完整。   

    TFK Kid Reporter Dahlia Suiter spoke with the writer of Writer to Writer: From Think to Ink.

    You just said that you didn't think you'd become a writer. Why?

    I didn't know what I would be. There were times when I wanted to be a scientist. I loved reading about biology.

    ①____

    I never thought about writing stories for adults (成年人). It was always for children because when I was a child, books were so important to me.

    ②____

    Revision(修改) is my favorite part. If I can add (增加) something surprising at the same time, I'm happy about that, too.

    ③____

    Writing is hard, and if you're not having fun with it, why do it? "Save ( 保存) what you write" is very important because you may need it. You may need that part you cut.

    ④____

    I hope the book will open up new places to go with writing.

    ⑤____

    Yes. Writing can be a good way to discover (发现) yourself. You learn about yourself when you write. Writing also slows your thinking down, and you can make discoveries and go places that you don't expect.

A. Do you think it's very important for kids to practice writing?

B. What do you hope kids will learn from Writer to Writer?

C. Why did you write "Have fun, and save what you write!" at the end of each part in Writer to Writer?

D. What do you enjoy most about writing?

E. Why do you write children's books?