century clot（英语翻译 考试中）

本文目录

• 英语翻译 考试中
• 冰天雪地裸体跪求 英语课上演讲PPT
• 老师有 5 个聪明的学生A ，B ，C ，D ，E
• 求直线 2x－3y＋1=0 关于直线3x－2y＋5=0对称的直线方程

英语翻译 考试中

Classmate, " whether proper classmate teenager, at life’s full flowering ", we filled with enthusiasm, transmit Chinese civilization with practical action!
wears neat, proper, coordinated, simple, generous clothes, can’t wear the unusual or exotic dress, can’t wear the fashion not according with the open middle school student’s identity, recommend wearing the clot
Such daily courteous languages as should pay attention to using " to ask, you are good, thanks, is be sorry, meet again ". It don’t show, talk about endlessly to want respecting, assisting, comity

冰天雪地裸体跪求 英语课上演讲PPT

These are 25+ general ideas and themes to help you inventing speech topics for a high school speech.
1. Strange experiences in a restaurant or bar.
2. Your most embarrassing moment.
3. Amazing discoveries or facts.
4. Adventure racing.
5. Astronomical signs.
6. Nursing your parents.
7. Islands in Oceania.
8. Railroads and trains.
9. How to visit an art museum.
10. Robotics in 2010.
11. Hurricanes, how do they begin.
12. Food photography is much difficult than you think.
13. A narrow escape from trouble ...
14. How to organize a surprise party.
15. Why are television soaps popular?
16. I want a new law on ...
17. What do you think about often?
18. What have you always wanted to do?
19. What would you like to change and why? This one is especially good as high school graduation speech topic.
20. Things we can’t understand.
21. What are your community activities?
22. Suggestions for a school field trip.
23. Dream explanation, ask for dreams and explain them.
24. Rhetorical questions, Socratical debating techniques.
25. Great places to go in the world.
26. Hiking trails nobody knows.
27. See Europe in seven days after high school.
Tip: stay close to your own interests when you develop high school speech topics.
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College speech topics for college public speaking and speech writing assignments. More than 25 themes, suggestions and college speech ideas to help you on the road to a successful presentation:
1. Award or graduation ceremonies revealed.
2. How to become a cheerleader.
3. Chemistry experiments and scientific breaktroughs.
4. Horse racing and betting procedures.
5. My plans for the future after college.
6. How spy sunglasses can see through clothes.
7. Diving expeditions to shipwrecks.
8. Famous painters and paintings from the Golden Century.
9. Favourite movie characters.
10. How to meet and greet Asian people politely.
11. Dining etiquette you must know for all occasions.
12. How digital music recording works.
13. How to impress people at first sight.
14. What would you do if you should have an unexpected week off?
15. What would you like to know more about.
16. What is your favourite career field?
17. Cloting styles and name brands for prom nights.
18. Famous fashion or sports apparel designers.
19. Your worsest campus activities.
20. Mountainbiking is fun and earthfriendly.
21. How I earn money with ... (fill in a not-ordinairy student job)
22. How to enhance campus life.
23. Fashion trends this spring and summer, atumn and winter.
24. The secrets of the Bermuda Triangle revealed.
25. The Hip-hop lifestyle is a no-life style.
26. Dangers of a cyberrelationship.
27. How to start your own Internet Broadcast program in three steps.
My tip: Determine and satisfy the needs of class mates when you prepare college speech topics.

老师有 5 个聪明的学生A ，B ，C ，D ，E

是红色的。
只有如下情况A看不出来：
前面4个人至少有1个红色的。
B看看前面，如果前面没有红色，那B就是红色。
但B猜不出来，说明B看到前面也有红色。
同理，C、D也看到前面有红色的，所以不敢确定自己的颜色。
所以E是红色的。

求直线 2x－3y＋1=0 关于直线3x－2y＋5=0对称的直线方程

由 2x－3y＋1=0和3x－2y＋5=0得它们的交点为(-13/5，-7/5)
设所求的对称直线方程为y-(-7/5)=k
因为两条直线与对称直线的夹角相等
所以 | (3/2-2/3)/ |=| (3/2-k)/(1+3/2*k) |
即k=2/3
所以所求直线方程为y+(7/5)=(2/3)*(x+13/5)