问题 填空题

已知a、b、c满足a﹣b=8,ab+c2+16=0,则2a+b+c=(    )。

答案

4

阅读理解

阅读理解。

     The publication of Harry Potter and the Half-Blood Prince pleases booksellers across China. The British

and American editions were No.1 and No. 3 separately on the sales chart of the Beijing Xidan Book Building

last week. The book's poster is highlighted and news about the book can often be heard on the radio.

     Why is the book so attractive to children? With curiosity, I got a copy of "Harry Potter". At first, I wanted

to glance over it and made some criticisms (批评). But, out of expectation, I have been deeply attracted by

the magic world. On the other hand,one can't help asking: Where is our own "Harry Potter"?

     The Chinese nation has a history of 5,000 years. With a vast market of youngsters, China did publish many

books popular among children. However, why are the present works not as good as those imported (进口的)? 

     There come two major reasons: Firstly, quite a number of children's books are of strong sense of teaching,

and lack interest and entertainment. Children often have a feeling of being "educated". No wonder they don't

like them. Secondly, children's reading materials involving "idiom stories" and "Chinese talents' stories", though

always in different covers, are usually much the same. Some books are plagiarized. The authors take words,

ideas from someone else's work. One knows the ending as early as in the beginning. In final analysis, the

authors of the books seldom take children's requirements into consideration.

     As a matter of fact, each child has his own wonderful imagination. They hope to understand the world and

nature. Similarly they have their own choices. They dislike similar stories.even if the stories are excellent. First-

class reading for children should be very interesting, which contains knowledge and the essence (精髓) of

national culture, which are presented in children's language.

     Market is a touchstone for products. The theory also holds true for cultural products. It is hoped that the

authors of children's books can learn something from the good market of "Harry Potter" and write out more

and better books loved by children.

1. Our books have the following disadvantages EXCEPT that _____.

A. they have little sense of interest and entertainment

B. many of our books are of the same

C. our authors know what our children need

D. the authors didn't pay much attention to the children's tastes

2. What does the underlined word "plagiarized" mean in Chinese? 

A. 改编

B. 杜撰

C. 印刷

D. 剽窃

3. The reason why Harry Potter and the Half-Blood Prince is so popular is that _____.

A. it opens a magic world for children

B. it has little sense of teaching

C. it is only written in children's language

D. it is advertised more on TV or poster

4. What does the writer mean by writing "Where is our own Harry Potter"?

A. We Chinese produce more books than other countries.

B. We are short of books for children and adults.

C. Our authors are expected to make the market of children's books take off.

D. Authors should write books named "Harry Potter".

问答题

2011年2月21日,某化工厂发生一起火药爆炸事故,造成22人死亡,3人受伤,约200m2及部分机器设备被炸毁,直接经济损失40.48万元。
事发当时,该厂84车间条装工序一螺旋输送器空心螺杆在运行中断裂,车间副主任熊××(事故中死亡)了解情况后,为了不影响生产,在生产继续进行,现场人员未撤出的情况下,违章指挥无证焊工甲(事故中死亡)焊接输送器。专职安全员乙即到厂部办理“动火证”。因安全科2名干部及4名正副厂长均因工外出,乙便自己写了一张“84车间需要动火,条装工序一螺旋动火焊接”的便条动火证,去找厂办主任丁审批。丁说自己无权审批,便与乙一起找到厂工会 * * 丙。丙便在便条动火证上签署了“同意动火,注意安全”,越权擅自批准动火。乙回到车间,将丙签发的便条动火证交给甲,并对欲焊接处0.7m2范围内的炸药进行清扫、冲洗。然后,由乙同意并监护无证焊工甲焊接螺旋输送器螺杆。约20分钟后,乙发现空心螺杆内有残存炸药,并有大量烟雾从断裂处喷出,但甲认为:“炸药清洗不出来,没办法,可能问题不大”。乙便用水冲洗螺杆降温,甲进行违章施焊。乙因事离开车间。约10分钟后,该车间发生爆炸。

根据以上场景,回答下列问题:


这起事故中存在的物的不安全状态和人的不安全行为分别是什么