地下维护室及沟道内须保持清洁，内部不准堆积任何物品。

下表是重庆市近年来的城乡居民家庭恩格尔系数情况(单位:%),从表中可知近年来该市

年份	2005年	2006年	2007年	2008年	2011年	2012年
城镇居民家庭恩格尔系数	37.7	36.1	35.7	37.1	36.3	35.9
农村居民家庭恩格尔系数	47.2	46.6	44.5	46.5	40.4	40.1

①城乡居民收入不断增加　                  

②城乡居民家庭食品支出总额整体上呈现下降趋势　

③城乡居民的消费层次、消费质量不断提高　  

④农村居民消费水平低于城市居民消费水平

A．①②  B. ③④     C. ①③     D. ②④

在Photoshop里，下面哪种工具可以减少图像的饱合度：（）

A.橡皮图章工具

B.减淡工具

C.海绵工具

D.手指工具

阅读理解。

     If Confucius(孔子)were still alive today and could celebrate his September 28 birthday

with a big cake, there would be a lot of candles.He'd need a fan or a strong wind to help

him put them out.

     While many people in China will remember Confucius on this special day, few people in the

United States will give him a passing thought.It's nothing personal.Most Americans don't

even remember the birthdays of their own national heroes.

     But this doesn't mean that Americans don't care about Confucius.In many ways he has

become a bridge that foreigners must cross if they want to reach a deeper understanding

of China.

     In the past two decades, the Chinese studies programs have gained huge popularity in

Western universities.More recently, the Chinese government has set up Confucius Institutes

in more than 80 countries.These schools teach both Chinese language and culture.The main

courses of Chinese culture usually included Chinese art, history and philosophy(哲学).Some

social scientists suggest that Westerners should take advantages of the ancient Chinese

wisdom to make up for the drawbacks of Westerners philosophy.Students in the United

States, at the same time, are racing to learn Chinese.So they will be ready for life in a world

where China is an equal power with the United States.Businessmen who hope to make

money in China are reading books about Confucius to understand their Chinese customers.

     So the old thinker's ideas are still alive and well.

     Today China attracts the West more than ever, and it will need more teachers to introduce

Confucius and Chinese culture to the West.

     As for the old thinker, he will not soon be forgotten by people in the West, even if his

birthday is.

1.The opening paragraph is mainly intended to ______

A.provide some key facts about Confucius

B. attract the readers' interest in the subject

C. show great respect for the ancient thinker

D. prove the popularity of modern birthday celebrations

2. We can learn from Paragraph 4 that American students______

A.have a great interest in studying Chinese

B. take an active part in Chinese competitions

C. try to get high scores in Chinese exams

D. fight for a chance to learn Chinese

3. What is the best title for the passege?______

A. Forgotten Wisdom in America

B. Huge Fans of the Chinese Language

C. Chinese Culture for Westerners

D. Old Thinker with a Big Future

4. The passage is likely to appear in ______.

A. a biography

B. a history paper

C. a newspaper

D. a philosophy textbook

可以用（）表示物质的溶解能力。

A.溶解度

B.溶度积

C.离解常数

D.平衡常数

电源变压器在仪表中起什么作用？