12．Music plays an important role in our life.
According to a study，there is a connection between music and language：Music improves certain language abilities in the brain.Here is an example.
Researcher Kraus ever did a survey and showed the result：Playing a musical instrument can improve a person's hearing ability.In his study，two groups of people listened to a person talking in a noisy room.The people in the first group were musicians，while those in the second group had no musical training.The musicians were able to hear the talking person more clearly.Why could these musicians hear better？Because they learnt to pay attention to certain sounds.Think about violinists in an orchestra（管弦樂團(tuán)）。When the violinists play with the group，they hear their own instrument and many others，too.In this way，musicians are able to focus on certain sounds，even in a room with lots of noise.
Here is another example.It tells us that music can help sick people get better.A doctor named Schlaug at Harvard Medical School works with stroke（中風(fēng)） patients.Because of their illness，these people cannot say their names，addresses，or other information normally.However，they can still sing.Schlaug was surprised to find that singing words helped his patients to speak.Why does this work？Because music makes different parts of the brain work，including the damaged（損壞的） part.This might help patients to use that part of the brain again.
So，music is not only enjoyable but also good for us in many other ways.Playing an instrument or singing can help us do better in school and keep our brain sharp as we get older.
根據(jù)短文內(nèi)容，回答下列問題。
（1）Who is Kraus？
（2）In Kraus' study，why could musicians hear better？
（3）Why can a patient still sing even when he/she can't say？
（4）What does the second example tell us？
（5）What does the writer advise us to do in the last paragraph？
