《变压器油中溶解气体在线监测装置技术规范》规定，对评估油浸式变压器内部故障有价值的特

                       I                                                         
( )1. What's in the room?                  
(     )2. Is that Jeff?                         
(     )3. Are these your grandparents?          .
(     )4. Where's my pencil case?             
(     )5. Are your books on the sofa?          
(     )6. Is the computer on the desk?         
(     )7. Who is your friend?                  
(     )8. What's this in English?                
(     )9. Is that boy your brother?              
(     )10. Where's my baseball?              

                           II
A. Your baseball? I don't know.
B. Yes, they are.
C. No, they are in the backpack. 
D. It's on the desk.
E. No, it's Jack.
F. Yes, it is.
G. No, it's my cousin.
H. There aresome things in it.
I. Mike.
J. It's a clock.