试题与答案

(2014届内蒙古鄂尔多斯市高三第一次模拟考试理综化学试卷) 鄂尔多斯市已探明煤

题型:填空题

题目:

(2014届内蒙古鄂尔多斯市高三第一次模拟考试理综化学试卷)

鄂尔多斯市已探明煤炭储量1496亿多吨,约占全国总储量的1/6。煤是重要的能源,也是生产化工产品的重要原料。试用所学知识,解答下列问题。

(1)煤的转化技术包括煤的气化技术和液化技术。煤的液化技术又分为                      

(2)在煤燃烧前需对煤进行脱硫处理。煤的某种脱硫技术的原理为

FeS2Fe2++SO42-Fe3+

这种脱硫技术称为微生物脱硫技术。该技术的第一步反应的离子方程式为               ,第二步反应的离子方程式为                                                

(3)工业煤干馏得到的产品有焦炭、                                    

(4)工业上主要采用氨氧化法生产硝酸,如图是氨氧化率与氨-空气混合气中氧氨比的关系。其中直线表示反应的理论值;曲线表示生产实际情况。当氨氧化率达到100%,理论上r[n(O2)/n(NH3)]=          ,实际生产要将r值维持在1.7~2.2之间,原因是                                         

答案:

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题型:单项选择题

A child who has once been pleased with a tale likes, as a rule, to have it retold in almost the same words, but this should not lead parents to treat printed fairy stories as formal texts. It is always much better to tell a story than read it out of a book, and, if a parent can produce what, in the actual situation of the time and the child, is an improvement on the printed text, so much the better.

A charge made against fairy tales is that they harm the child by frightening him or making him sad thinking. To prove the latter, one would have to show in a controlled experiment that children who have read fairy stories were more often sorry for cruelty than those who had not. As to fears, there are, I think, some cases of children being dangerously terrified by some fairy story. Often, however, this arises from the child having heard the story once. Familiarity with the story by repetition turns the pain of fear into the pleasure of a fear faced and mastered.There are also people who object to fairy stories on the grounds that they are not objectively true, that giants, witches, two-headed dragons, magic carpets, etc. do not exist; and that, instead of being fond of the strange side in fairy tales, the child should be taught to learn the reality by studying history. I find such people, I must say so peculiar that I do not know how to argue with them. If their case were sound, the world should be full of mad men attempting to fly from New York to Philadelphia on a stick or covering a telephone with kisses in the belief that it was their beloved girl-friend. No fairy story ever declared to be a description of the real world and no clever child has ever believed that it was.

The author considers that a fairy story is more effective when it is ().

A. repeated without any change

B. treated as a joke

C. made some changes by the parent

D. set in the present

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