Presecheats for the teachers of the English Language 1, 2 and 3 modules

What level is called BREAKTHROUGH? *a) LEVEL A1

710. 
     What level is called EFFECTIVE OPERATIONAL PROFICIENCY? *a) LEVEL C1
     
711. 
     What level is called MASTERY? *a) LEVEL C2
     

712. 
     What level is called THRESHOLD? *a) LEVEL B1
     
713. 
     What level is called VANTAGE? *a) LEVEL B2
     

714. 
     What level is called WAYSTAGE? *a) LEVEL A2
     
715. 
     What method is cluster? *a) is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups
     
716. 
     What of the following is an mobile operating system? *d) Android, iOS, Symbian
     
717.