问题 阅读理解
阅读理解
       What hobbies or interests do you have? Do you like reading stories or writing novels(小说)? Do you
like learning something about the world? Do you like making music or drawing pictures? By knowing what
kind of things you like, you can choose the right job for your personality(个性). If you like reading or
writing. Maybe a writer, a newspaper reporter, or a lawyer will be your favorite job. If you like learning
facts about science, becoming a scientist, a biologist, or an astronomer(天文学家) may be your best
choice. If you like doing creative(创造性的) work, maybe you should think about becoming an artist, a
photographer(摄影师), or a musician(音乐家).
( )1. A writer          
( )2. An artist          
( )3. A lawyer          
( )4. A biologist        
( )5. A scientist        
( )6. A news reporter    
( )7. An astronomer      
( )8. A photographer    
( )9. A musician         
                            
A. produces paintings or drawings.                                  
B. studies animals and plants.                                      
C. writes books and stories.                                        
D. studies and practices law.                                      
E. takes photos as a professional.                                  
F. studies space and stars.                                        
G. works in science, does scientific research.                      
H. makes music and plays a musical instrument very well.            
I. writes about news events for a newspaper, or tells people        
about them on TV or on the radio.                                   
                                                                    
答案

1-5 C A D B G  6-9 I F E H

计算题

铁及其化合物在国民经济的发展中起着重要作用。

(1)已知:4Fe(s)+3O2(g)=2Fe2O3(s) △H=-1641.0kJ·mol-1 C(石墨)+1/2O2(g)=CO(g) △H=-110.5 kJ·mol-1则Fe2O3(s)+3C(石墨)=2Fe(s)+3CO(g)的△H=   kJ·mol-1

(2)铁在潮湿的空气中易发生电化学腐蚀。某同学将NaCl溶液滴在一块光亮清洁的铁板表面上,一段时间后发现液滴覆盖的圆周中心区(a)已被腐蚀而变暗,在液滴外沿形成棕色铁锈环(b),如图所示。液滴边缘是  区(填“正极”或“负极”),其电极反应式为   

(3)铁钛合金是一种常用的不锈钢材料,某同学在探究该合金的性质时,往含有TiO2+、Fe3+溶液中加入铁屑至溶液显紫色,该过程中发生的反应有:

①2TiO2(无色)+Fe+4H=2Ti3(紫色)+Fe2+2H2O

②Ti3(紫色)+Fe3+H2O=TiO2(无色)+Fe2+2H

   

(4)①高铁酸钾(K2FeO4)是一种优良的水处理剂。FeO在水溶液中的存在形态如右图所示,纵坐标表示各存在形态的分数分布。

下列说法不正确的是   。(填字母)

A.不论溶液酸碱性如何变化,铁元素都有4种存在形态

B.向pH=10的这种溶液中加硫酸至pH=2,HFeO的分布分数逐渐增大

C.向pH=6的这种溶液中加KOH溶液,发生反应的离子方程式为:

HFeO+OH=FeO+H2O

②K2FeO4溶于水会放出一种无色无味气体,其杀菌消毒、吸附水中的悬浮杂质的原理可用离子方程式表示为   

(5)向一定量的Fe、FeO、Fe3O4的混合物中加入100 mL 1 mol·L-1的盐酸,恰好使混合物完全溶解,放出224 mL(标准状况)气体,加入KSCN溶液不显红色。若用足量的CO在高温下还原相同质量的此混合物,可得铁    g。

单项选择题