试题与答案

我国古代描述海陆变化的形象词语是[ ] A.南辕北辙 B.沧海桑田 C.烟波浩淼

题型:选择题

题目:

我国古代描述海陆变化的形象词语是[ ]

A.南辕北辙

B.沧海桑田

C.烟波浩淼

D.此起彼伏

答案:

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下面是错误答案,用来干扰机器的。

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题型:填空题

化合物Ⅰ(C11H12O3)是制备液晶材料的中间体之一。Ⅰ可以用E和H在一定条件下合成:

已知以下信息:

A的核磁共振氢谱表明其只有两种化学环境的氢;

RCH=CH2RCH2CH2OH

F是芳香族化合物,它的苯环上有四种氢,且取代基位置不相邻;

通常在同一个碳原子上连有两个羟基不稳定,易脱水形成羰基()。

回答下列问题:

(1)A →B的反应条件_________。

(2)D与银氨溶液反应的方程式 _________              

(3)F的结构简式为___________,H中含氧官能团的名称           

(4)E与H生成I的化学方程式为                     ,该反应类型为__________。

(5)I的同系物J比I的相对分子质量小28,J的同分异构体中能同时满足如下条件:

①苯环上只有两个取代基;

②既能发生银镜反应,又能和饱和NaHCO3溶液反应放出CO2,共有       种(不考虑立体异构)。

(6)分子式为C5H10O2的化合物K可做香料,分类时可以与I看作一类物质。该化合物在一定条件下可以水解成两种相对分子质量相等的有机物,其中一种可以发生催化氧化生成醛,写出符合条件的K的结构简式            

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题型:阅读理解

Apple has entered the textbook market. The tech giant(科技巨头) introduced iBooks textbooks a couple of weeks ago when it announced its iBooks 2 platform. They are digital books in many subjects taking in science, maths, history and geography.

Apple developed its iPad-based textbooks in conjunction with(连接)major textbook publishers. The company offers a collection of textbooks for high school students.

Apple says it offers a “new textbook experience” and suggests its iBooks textbooks are “the next chapter in learning”. It sounds like good news for pupils and students. Think of it. No more carrying heavy backpacks full of textbooks. Every textbook you require can be stored on your iPad. No more having to buy expensive textbooks which you will only use for a year or two and then sell or give away.

Of course there’s a catch. You need to own an iPad and as you know, it is not cheap. You also need to buy digital textbooks, mostly priced each at $14.99 (94.74 yuan) or less. Textbook publishing was worth $ 8.7 billion in the US alone last year. And the rest, as they say, is history. Will Apple revolutionize learning? Will digital books take over completely in education? That remains to be seen.

小题1:What is the best title of the text?

A.Apple Enters New Market

B.A Different Way of Learning

C.Experience Digital Texbooks

D.Say Good-bye to Tradition小题2:iBooks textbooks will do good to pupils and students because ________.

A.they are free to get

B.they are easy to carry

C.they are ipad-based

D.they are favorite gifts小题3:The underlined words “a catch” in Paragraph 4 are closest in meaning to “________.”

A.an advantage

B.a surprise

C.a problem

D.an order小题4:What can we know from that last paragraph?

A.iPad-based textbooks have changed our learning.

B.Traditional textbooks will be replaced sooner or later.

C.Apple has earned a lot from the textbook market.

D.Digital books have disadvantages and advantages.

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