If you want to stay young,sit down and have a good think．This is

If you want to stay young,sit down and have a good think．This is the research result of professor Faulkner,who says that most of our brains are not getting enough exercise and as a result,we are ageing unnecessarily soon. Professor Faulkner wanted to find out why healthy farmers in northern Japan appeared to be losing their ability to think and to reason at a relatively early age,and how the process of ageing could be slowed down. He set about measuring brain volumes of a thousand people of different ages and occupations． Computer technology enabled him to obtain precise measurements of the volume of the front and side sections of the brain,which relate to intelligence and emotion,and determine the human character． Contraction of front and side parts--as cells die off--was observed in some subjects in their thirties,but it was still not evident in some sixty-and seventy-year-olds. Faulkner concluded from his tests that there is a simple way to slow the contraction—using the head. The findings show that contraction of the brain begins sooner in people in the country than in the towns．Those least at risk,says Faulkner,are lawyers,followed by university professors and doctors．White--collar workers doing routine work are,however,as likely to have shrinking brains as the farm worker,bus driver and shop assistant. Faulkner's findings show that thinking can prevent the brain from shrinking．Blood must circulate properly in the head to supply the fresh oxygen the brain cells need．"The best way to maintain good blood circulation is through using the brain,"he says．"Think hard and engage in conversation．Don't rely on pocket calculators." According to the passage,which group of people seem to age slower than the others?
A、Farmer
B、Lawyer
C、Clerk
D、Shop assistant
【正确答案】：B
【题目解析】：根据文章的内容，Faulkner教授的研究发现，大脑的萎缩在乡村的人们中比在城市的人们中更早开始。他进一步指出，风险最低的人群是律师，其次是大学教授和医生。而从事常规工作的白领工人，如店员、公共汽车司机和店员，他们的大脑萎缩的可能性与农民相似。 从这些信息中，我们可以推断出律师的大脑萎缩速度最慢，因此他们似乎比其他人群衰老得更慢。这与文章中的描述相符，即律师是风险最低的人群。 因此，正确答案是B，即律师。