{{i}} quEstions 11-13 ArE BAsED on thE Following pAssAgE. you now hAvE 15 sEConDs to rEAD thE quEstions 11-13.{{/i}} why Do stuDEnts in summEr sChools lEArn quiCkly
A、BECAusE thEy All work vEry hArD、
B、BECAusE thEir tEAChErs ArE All nAtivE spEAkErs oFEnglish.
C．BECAusE thEy lEArn not only in But Also out oF ClAss.
D．BECAusE thEy ArE All ADvAnCED stuDEnts.