问题 问答题

关于仪器的用途,下列叙述中不正确的是(  )

A.试管可以用作反应容器

B.铁架台可以用来固定装置

C.量筒可以用作反应容器

D.玻璃棒可以用来搅拌液体

答案

A、试管可以用作反应容器,由于试管所盛液体量较少,所以用作少量试剂的反应容器,故A正确;

B、铁架台是用来固定装置的,故B正确;

C、量筒只用来量取液体,不能用来作反应容器,故C错误;

D、在溶解和蒸发中玻璃棒的作用是搅拌,故D正确.

故选C

完形填空
完形填空。
       In China, most people's names have    1     parts, the family names and the    2     names.
Most people may each have many names. For example, when they are very    3     at home,
they usually have nicknames (昵称). At school, they use their     4     names. If someone is a
writer, he or she has a    5     name. Now new couples (夫妇) are very    6    when they name
their children. Most of the names have     7     meanings. Some show their parents'    8   .Girls'
names show that their parents want them to be beautiful and nice.     9     names often show their
parents want them to be strong; and    10     to the country.
( )1. A. one    
(     )2. A. family 
(     )3. A. young  
( )4. A. family 
(     )5. A. good   
(     )6. A. sad      
(     )7. A. no     
(     )8. A. work   
( )9. A. Mothers'
( )10. A. bad   
B. two     
B. middle' 
B. old     
B. given   
B. bad     
B. careful 
B. bad     
B. question
B. Fathers'
B. important        
C. three     
C. last      
C. right     
C. full           
C. interesting        
C. sorry     
C. happy     
C. hope               
C. Children's
C. favorite  
D. four          
D. given                                               
D. happy         
D. middle        
D. pen           
D. interesting   
D. special (特殊的)
D. worry         
D. Boys'         
D. young         
单项选择题