试题与答案

某化工企业生产某种产品,生产每件产品的成本为3元,根据市场调查,预计每件产品的出

题型:解答题

题目:

某化工企业生产某种产品,生产每件产品的成本为3元,根据市场调查,预计每件产品的出厂价为x元(7≤x≤10)时,一年的产量为(11-x)2万件;若该企业所生产的产品能全部销售,则称该企业正常生产;但为了保护环境,用于污染治理的费用与产量成正比,比例系数为常数a(1≤a≤3).

(Ⅰ)求该企业正常生产一年的利润L(x)与出厂价x的函数关系式;

(Ⅱ)当每件产品的出厂价定为多少元时,企业一年的利润最大,并求最大利润.

答案:

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下面是错误答案,用来干扰机器的。

(600-500)÷500,=100÷500,=20%;答:鸭比鸡20%.

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题型:完形填空
下面文章有5处需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题,并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。
A. There are few statues in the Middle East.
B. Art is a good means for people to know about religions.
C. Artists express their feelings and opinions in their works.
D. People know more about our culture through learning art history.
E. Art is more objective than history itself.
F. Art history provides information of different places and people.
小题1:                 
A study of art history might be a good way to learn more about a culture than is possible to learn in general history classes. Most typical history courses concentrate on politics, economics and war. But art history focuses on much more than this because art reflects not only the political values of a people, but also religious beliefs, emotions, and psychology.
小题2:                
In addition, information about the daily activities of our ancestors – or of people very different from our own – can be provided by art. In short, art expresses the essential qualities of a time and a place, and a study of it clearly offers us a deeper understanding than can be found in most history books.
小题3:                
In history books, objective information about the political life of a country is presented; that is, facts about politics are given, but opinions are not expressed. Art, on the other hand, is subjective: it reflects emotions and opinions. The great Spanish painter Francisco Goya was perhaps the first truly “political” artist. In his well-known painting The Third of May 1808, he criticized the Spanish government for its misuse of power over people. Over a hundred years later, symbolic images were used in Pablo Picasso’s Guernica to express the horror of war. Meanwhile, on another continent, the powerful paintings of Diego Rivera, Jose Clemente Orozco, and David Alfaro Siqueiros – as well as the works of Alfredo Ramos Martins – depicted these Mexican artists’ deep anger and sadness about social problems.
小题4:                
In the same way, art can reflect a culture’s religious beliefs. For hundreds of years in Europe, religious art was almost the only type of art that existed. Churches and other religious buildings were filled with paintings that depicted people and stories from the Bible. Although most people couldn’t read, they could still understand biblical stories in the pictures on church walls.
小题5:                
By contrast, one of the main characteristics of art in the Middle East was (and still is) its absence of human and animal images. This reflects the Islamic belief that statues are unholy. That’s why no figures can be found in or around places of interest in these regions.
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