84. What suggestion does the passage mainly give? (No more than 10 words)

　_______________________________________________________________________________

Section C

Directions: Write an English composition according to the instructions given below in Chinese.

高三毕业在即，学校将举行以“畅想未来”为主题的英文演讲征文活动。请写一篇演讲稿，从工作和家庭两方面谈谈你二十年后的生活。词数：120以上(不包括已给的开头与结尾)

Dear teachers and classmates,

It is a great honor for me to give a speech here about my future life in twenty years. …

Thank you for listening!

株洲市二中2010届高三考前模拟考试试卷

83. How do you know what you don’t want in a man? (No more than 5 words)

　_______________________________________________________________________________

82. According to the author, why does a couple probably fight？(No more than 4 words)

　_______________________________________________________________________________

　 *It could get hot fast

　 *It should be used with words in an e-mail;

　 *It might make you 80._________ when getting junk mails.

Section B

Directions: Read the following passage. Answer the questions according to the information given in the passage and required words limit.

Scientists have determined it's not advisable to hurry marriage. But what’s the best age to wed?

When Avril Lavigne announced she was splitting from her husband, comments from her friends suggested that she was only 21 when she tied the knot and later she said that she realized she'd been too young to make such a life-altering decision. Could fellow young celebrity divorcées(离婚者) Reese Witherspoon, Kate Hudson, and Britney Spears have also hit the same age-related issue?

The Magic Number

There are practical reasons for the mid-20s dividing line, and most of them boil down to two biggies: education and money.　

It turns out that the more years of higher education a woman has under her belt on her wedding day, the lower the chances that she'll get divorced ... and by 25, you're more likely to have earned a degree or two. Educated women tend to be more confident about who they are and less willing to settle for a man who doesn't meet their standards.

Odds(可能性) are that by 25 you're also supporting yourself, so there's less incentive(刺激; 鼓励)for you to rush into marriage because you're seeking financial security from him. But the marriage-related benefits of working and having money of your own go beyond feeling secure. Learning to budget your cash carefully when you're single will help you avoid financial problems-one of the main causes of couple fights-for the rest of your life.　

Knowing the Real You

At 25, you've had time for some crucial life experiences, including a relationship or two that may have improved your Mr. Right radar. You've probably dated enough to have a better idea of what you don't want in a man, which makes it easier to know what you can live with and can't live without.　

Perhaps the most important aspect of waiting is that you'll know what your goals and values really are. While you don't want to marry someone just like you, marriage is a lot easier if you two share a similar outlook on life.

Twenty-four and already married to the man of your dreams? Don't worry: Many young marriages survive. But given the choice, you might consider putting off the big day until your mid-20s or later.

81. What main factors influence the mid-20s dividing line? (No more than 3 words)

　_______________________________________________________________________________

*74___________: Facemail can let your e-mails read by a “person”;

*Feature: Facemail faces are 75.______________and changeable;

*76.____________: Life FX

*Future of Facemail: ①It is sure to have 77._____________;

　　　　　　　　　　 ②It may be used in a computer screen 78.___________ to help mothers;

* I was greeted by 72.___________ on my computer when I opened my e-mail the other day;

* She kept reading to me an e-mail from my brother about a high-speed Internet connection;

* Sometimes she would stop to smile or 73._______________;

2010．05

21、已知，函数，．

(1)求函数在区间上的最小值；

(2)是否存在实数，使曲线在点处的切线与轴垂直？若存在，

求出的值，若不存在，请说明理由；

(3)求证：．

20、设椭圆：的左、右焦点分别为，上顶点为，过点与垂直的直线交轴负半轴于点，且．

　　 (1)若过、、三点的圆恰好与直线：相切，求椭圆的方程；

　　 (2)在(1)的条件下，过右焦点作斜率为的直线与椭圆交于、两点．

① 试证明：为定值；

② 在轴上是否存在点使得以为邻边的平行四边形是菱形，如果存在，求出的取值范围，如果不存在，说明理由．

19、今年4月14日，冰岛南部艾雅法拉火山喷发，弥漫在欧洲上空多日的火山灰严重影响欧洲多个国家的多个机场的正常运营。据了解，受火山灰影响而取消的航班多达10万架次，给世界航空业带来的直接损失高达13亿美元，给人们的出行、社会的各项活动带来了很大的困难。因为风向的原因，该火山灰主要飘落在该火山口的东北方向与东南方向之间的欧洲大部，假设该火山喷发停止后，需要了解火山灰的飘散程度，为了测量的需要，若将距离该火山喷口中心50米内的扇形面记为第1区、50米至100米的扇环面记为第2区、．．．．、第米至米的扇环面记为第n区、．．．．．．，现测得第1区的火山灰平均每平方米为1吨、第2区每平方米的平均重量较第1区减少2%、第3区较第2 区又减少2%，若依次类推，问：

(1)离火山口1225米处的火山灰大约为每平方米多少千克？

(2)第几区内的火山灰总重量最大？

(3)该火山这次喷发的火山灰从第1区至第n 区的总重量为多少？(用含n的式子表示)

提示：当n较大时，可用进行近似计算。