患者右臀疼痛，影像检查如图所示，最可能的诊断是() A．骨软骨瘤 B．骨梗死 C．骨

某企业按年利率4.5%向银行借款500万元，银行要求保留10%的补偿性余额，则该项借款的有效率利率为（）。

A．4.95%

B．5%

C．5.5%

D．9.5%

（11分）下图表示各物质之间的转化关系。已知：常温下D、E、F、I、J为气体，H、I、J都为氧化物，C的焰色反应为黄色，M为红褐色固体。

（1）写出： J的结构式      ，M的化学式       ；

（2）基于反应①原理的化学工业称为      ；写出该反应的化学方程式       ；

（3）写出K溶液和E反应的离子方程式     ；写出F溶液和H反应的离子方程式      ；

（4）已知由G分解得到的H、I、J三者的物质的量相等，则G的化学式为     

     This brief book is aimed at high school students, but speaks to anyone learning at any stage of life.

      Its formal, serious style closely matches its content, a school-masterly book on schooling. The author, W. H. Armstrong, starts with the basics: reading and writing. In his opinion, reading doesn't just mean

recognizing each word on the page; it means taking in the information, digesting it and incorporating it

into oneself just as one digests a sandwich and makes it a part of him. The goal is to bring the information

back to life, not just to treat it as dead facts on paper from dead trees. Reading and writing cannot be

completely separated from each other; in fact, the aim of reading is to express the information you have

got from the text. I've seen it again and again : someone who can't express an idea after reading a text is

just as ineffective as someone who hasn't read it at all.

     Only a third of the book remains after that discussion, which Armstrong devotes to specific tips for

studying languages, math, science and history. He generally handles these topics thoroughly and equally,

except for some weakness in the science and math sections and a bit too much passion regarding history. Well, he was a history teacher? if conveyed only a tenth of his passion to his students, that was a

hundred times more than my history teachers ever got across. To my disappointment, in this part of the

book he ignores the arts. As a matter of fact, they demand all the concentration and study that math and

science do, though the study differs slightly in kind. Although it's commonly believed that the arts can only

be naturally acquired, actually, learning the arts is no more natural than learning French or mathematics.

     My other comment is that the text aged. The first edition apparently dates to the 1960s-none of the

references(参考文献)seem newer than the late 1950s. As a result, the discussion misses the entire

computer age.

     These are small points, though, and don't affect the main discussion. I recommend it to any student

and any teacher, including the self-taught student.     

1. According to Armstrong, the goal of reading is to________. 

A. gain knowledge and expand one's view

B. expresses ideas based on what one has read

C. understand the meaning between the lines 

D. get information and keep it alive in memory

2. The author of the passage insists that learning the arts_________. 

A. is as natural as learning a language  

B. demands real passion

C. is less natural than learning math    

D. requires great efforts 

3. What is a shortcoming of Armstrong's work according to the author?

A. It lacks new information. 

B. The style is too serious. 

C. There is too much discussion.

D. Some ideas are slightly wrong.

4. This passage can be classified as________. 

A. an advertisement  

B. news report

C. a feature story  

D. a book review

有关电解磨削错误的论述是（）

A.采用钝化性的电解液

B.设备经济性好

C.生产率高于机械磨削

D.加工精度好于电解加工