问题 完形填空
完形填空。
     Catherine  was a famous writer of children's  stories.  She lived in a fine old house in  a small town near
London. Often she worked at home, in her quiet      l         long before her books became popular, she had tried to teach    2    how to use a computer.  But sometimes she had to     3      to get some books from the
library or have a meeting. She didn't like being away because she was worried about robbers. So she was very careful. Just before leaving,  she always put a  full cup of coffee on the writing desk,  and left the radio playing to make a robber think someone   4   at home.
     One  day  she came back after a day out ,  and  found that  there was something  different in her house.
There was only a little   5   left in the cup, and the radio was off. But when she looked at her computer, she saw it was   6   , and someone had typed in a new story. She had no idea who had got in, or how, because none of the doors or windows was broken. Then she sat down to  read the story.  To her surprise, it was a very good one. “I’ll use it in my   7   book”, she said     8   .
     The next  month she had to go to London.  She  put  a cup of coffee and  a  plate of sandwiches on the
desk. When she returned, the coffee and the sandwiches had      9      . She ran to the computer. This time
there was only     10   0n the screen.  “IT’S NOT YOUR STORY . IT’S MINE ! ”it said.
( ) 1. A. classes            
( ) 2. A. the students      
( ) 3. A. leave the house    
( ) 4. A. must have          
( ) 5. A. water              
( ) 6. A. on                
( ) 7. A. old                
( ) 8. A. carefully          
( ) 9. A. brought            
( ) 10.A. a piece of paper  
B. lessons    
B. herself    
B. have a rest
B. has        
B. milk        
B. off        
B. first      
B. sadly      
B. broken      
B. a message  
C. classroom      
C. the robber    
C. give a message
C. must          
C. coffee        
C. broken        
C. every          
C. happily        
C. gone          
C. a new story    
D. study          
D. her children  
D. buy a computer
D. must be        
D. tea            
D. over          
D. next          
D. badly          
D. eaten          
D. a letter      
答案

1~5 DBADC  6 -10 ADCCB

多项选择题
选择题

(海南省万宁市2008届高三年级第一学期期中考试,化学,17)(1)中和热的测定实验(如图)。

①量取反应物时,取50mL0.50mol·L-1的盐酸,还应加入的试剂是           (填序号)。

A.50mL0.50mol·L-1NaOH溶液

B.50mL0.55mol·L-1NaOH溶液

C.1.0gNaOH固体

②在实验过程中,该同学需要测定并记录的实验数据有           (填序号)。

A.盐酸的浓度              B.盐酸的温度   

C.氢氧化钠溶液的浓度      D.氢氧化钠溶液的温度

E.水的比热容              F.反应后混合溶液的终止温度

③若用50mL0.5mol·L-1醋酸溶液代替上述盐酸测定中和热,所得数据          。(填“偏大”或“偏小”或“不变”)

(2)硫酸铜晶体(CuSO4·xH2O)结晶水含量的测定实验。

①称量一定质量硫酸铅晶体后,加热脱结晶水时用到的仪器主要有:玻璃棒、三角架、坩埚、坩埚钳、泥三角和           

②实验中要将坩埚放在干燥器中冷却,其主要目的是                            

                                                                   

③若坩埚的质量为m,坩埚与硫酸铜晶体的质量为m1,加热后坩埚与无水硫酸铜的质量为m2,则晶体CuSO4·xH2O中x=                      (写表达式)。

④如果实验中加热温度过高,固体颜色变黑,则测定结果会           (填“不变”或“偏高”或“偏低”)。