由曲线$y=x^2-2x$与直线$x+y=0$所围成的封闭图形的面积为（   ）

一本书如果每天读80页，那么4天读不完，5天又有余；如果每天读90页，那么3天读不完，4天又有余；如果每天读N页，恰好N（N是自然数）天读完，这本书是____ 页．

阅读材料，回答问题

材料一：「幸福生活」改革开放以来，我国进入了一个尊重财富、鼓励创造的时代。致富是我们每个人的愿望，财富的获得也有多种办法和途径，但“君子爱财，取之有道”。

材料二：「心头之痛」“地沟油”产业链的黑幕；“瘦肉精”刑事案件；老酸奶和果冻使用工业明胶；转基因食品持续受到社会强烈关注；福喜食品安全事件震动全国等。时至今日，有关“毒”食品的新闻频频曝光，除“毒豆芽”“毒鸭血”“毒腐竹”之外，“毒”食品层出不穷，不胜枚举。

—______

根据对话内容，从方框中选择4个恰当的句子完成对话

a. Well, how about Town Cinema?

b. Hi, Mary. Are you free this evening?

c. I'm sorry to hear that.

d. May I speak to Mary, please?

e. Sure. I'd love to. Where?

Rick: Hello!  ____

Mary: Hello! This is Mary speaking.

Rick:____

Mary: Yes. I have nothing to do.

Rick: Can you go to the movies with me?

Mary:  ____

Rick: Let's go to Movie Palace. It's close to home.

Mary: But it doesn't have comfortable seats.

Rick:  ____ It's the best theatre in town.

Mary: That's agood idea. Let's meet at the front gate of the cinema at eight. OK?

Rick: OK. See you.

Mary: See you.