问题 解答题

某地生产一种绿色蔬菜,若在市场上直接销售,每吨利润为1000元;经粗加工后销售,每吨利润可达4500元;经精加工后销售,每吨利润涨至7500元.当地一家农工商公司收获这种蔬菜140吨,该公司加工的生产能力是:如果对蔬菜进行粗加工,每天可加工16吨;如果进行精加工,每天可加工6吨,但两种加工方式不能同时进行.受季节等条件限制,公司必须在15天内将这批蔬菜全部销售或加工完毕.

(1)请你为此公司研制三种可行方案;

(2)你认为选择哪种方案获利最多?为什么?

答案

解:(1)方案一:将蔬菜全部进行粗加工;

方案二:尽可能多地对蔬菜进行精加工,没有来得及进行加工的蔬菜,在市场上直接销售;

方案三:将部分蔬菜进行精加工,其余蔬菜进行粗加工,并恰好15天完成;

(2)方案一:获利为4500×140=630000(元);

方案二:15天可精加工6×15=90(吨),

说明还有50吨需要在市场直接销售,

故可获利7500×90+1000×50=725000(元);

方案三:可设将x吨蔬菜进行精加工,则(140﹣x)吨进行粗加工,

依题意得:

解得:x=60.

故获利:7500×60+4500×80=810000(元).

因此:选择方案三获利最多.

答:选择方案三获利最多.

阅读理解

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 his 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 passage?

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

单项选择题