①Want to keep your mind healthy throughout your life? （1）an instrument. A new study found that musicians （2）brains that function better than their peers well into old age.
②Researchers （3）the mental abilities of senior citizens and discovered that musicians performed better at a number of skills. In （4），they excelled at visual memory tasks. （5）musicians had similar verbal capabilities to non-musicians, their ability to memorize new words was better, too. Perhaps most importantly, the musicians' IQ （6） were higher overall than those who spent their lives listening to music （7）performing it.
③The experience of musicians also played a role in how （8）their minds were. The younger they began to play their instruments, the better their minds performed at the mental tasks. （9）, the total number of years they played instruments throughout their life （10）how strong their brains remained years later. A preliminary study of 70 older participants, with different musical experience over their lifetimes, provides a connection （11）musical activity and mental balance in old age. The results revealed （12）participants with at least 10 years of musical experience had better performance in nonverbal memory, naming, and executive processes in advanced age （13） non-musicians.
④The study also found that musicians who （14） in their spare time had even higher-functioning brain capabilities. This finding supports （15）recent study that reported people who walk regularly maintain healthier brains. With that in mind, perhaps joining a marching band will make you the smartest person at the retirement home in the future.
第9题
A、However
B、Incidentally
C、Nevertheless
D、Additionally
【正确答案】：D
【题目解析】：此外，他们一生中演奏乐器的总年限与多年后他们大脑的强度相当。表示递进关系，用additionally 此外。however 然而，表示转折； incidentally 偶然，附带地； nevertheless尽管如此；然而。