American scientists say musical training seems to improve communication skills. They found that developing musical skills involves the same process in the brain as learning how to speak. The scientists say that could help children with learning disabilities.
Nina Kraus is a neurobiologist (神经生物学) at Northwestern University in Illinois.  She says musical training involves putting together different kinds of information.  She says the process involves hearing music, looking at musical notes, touching an instrument and watching other musicians. She says the process is not much different from learning how to speak.  Both involve different senses.
Professor Krauss says musical training and learning to speak each make us think about what we are doing. She says speech and music pass through a structure of the nervous system called the brain stem. The brain stem controls our ability to hear. 
Until recently, experts have thought the brain stem could not be developed or changed.  But Professor Krauss and her team found that musical training can improve a person's brain stem activity. Their study was reported in the Proceedings in the National Academy of Sciences. 
The study involved individuals with different levels of musical ability. They were asked to wear an electrical device that measures brain activity. The Individuals wore the electrode (电极) while they watched a video of someone speaking and a person playing a musical instrument -- the cello. Professor Krauss says cellos (大提琴) have sound qualities similar to some of the sounds that are important with speech. 
The study found that the more years of training people had，the more sensitive they were to the sound and beat of the music. Those who were involved in musical activities were the same people in whom the improvement of sensory events was the strongest. 
Professor Kraus says the study shows the importance of musical training to children with learning disabilities. She says using music to improve listening skills could mean they hear sentences and better understand facial expressions. 
According to the passage, the new findings about the value of musical training involves ______ aspects.

A．three

B．four

C．five

D．six

Which is the correct order of the process of musical training?
a. touching an instrument                   b. watching other musicians
c. hearing music                          d. looking at musical notes

A．a→b→c→d

B．b→c→a→d

C．c→d→a→b

D．d→a→b→c

Scientists say musical training could help children _______ in this article.

A．improve their grades	B．with disabilities
C．with learning disabilities	D．get on well with others

Professor Krauss says besides musical training, ______ can also let us think about what we are doing.

A．learning to speak

B．hearing ability

C．musical ability

D．listening skills

According to the passage we can know that Professor Krauss ______ some experts’ opinion that the brain stem could not be developed or changed.

A．is in favor of

B．disagrees with

C．ignores

D．thinks highly of