A．Because they have subconsciously trained their ears to get accustomed to those sound patterns.
B．Because their brains have been trained to recognize specific sound patterns in noisy background.
C．Because they can produce the brain wave patterns the same as those sound patterns.
D．Because their trained ears are sensitive to specific sounds no matter where they are.
A．language ability can be enhanced by listening to music
B．all kinds of brain disorders can be cured by listening to music
C．music is the sole method to deal with mental diseases
D．music can be effective in treating people with language problems
A．They should utter a phrase a hundred times a day when starting the recovery training.
B．They should chant phrases instead of saying them at the beginning stage of the training.
C．Doctors should persuade them to sing songs every day to regain their speaking ability.
D．They should practise singing the phrases after saying them hundreds of times every day.
A．restore the language function of the damaged system in the left brain
B．hinder the damaged structure in the brain from deteriorating sharply
C．improve the structures of the underdeveloped systems in the right brain
D．practise the parts of the brain which are under constant use