The brain spreads resources______if its busy focusing on many aspects of a task.A．averagel

______(47)A.The city trying to stop the spread of

______(48)A.The city trying to stop the spread of

______(49)A.The city trying to stop the spread of

______(50)A.The city trying to stop the spread of

______(47 )A.The city trying to stop the spread o

______(48 )A.The city trying to stop the spread o