[解析]
(1)B.细节辨析题.根据第一段A recently published study also appears to attest that the good effects oftraining can last for many years after that training has ended."最近一项已发表的调查证明,训练带来的好处将在训练结束后的多年后持续存在."故答案B是错误的.故选B.
(2)D.细节辨析题.根据第八段Still,the old people in any of the three classes generally reported less difficulty in performing daily activities than the control group."据报道,在这三组的老人们在完成日常活动方面仍然比控制组的老人要好."故选D.
(3)C.词义辨析题.根据上下文内容可知,A recently published study also appears to attest that the good effects of training can last for many years after that training has ended.句意为最近发表的一项研究似乎也证明,培训的良好效果可以在培训结束后持续多年.attest"证明,作证";A.Affect."影响,感动,作用";B.Deny"否认,拒绝承认,自制";C.Prove"证明,检验,结果是";D.Improve"改善,改进,提高";故答案为C.
(4)A.主旨大意题.阅读全文,根据文章内容可知,本文主要讲述了随着年龄的增长,人们的某些心理机能也在衰退,然而最近有研究表示这些机能可以通过训练重新获得,而且通过训练后这些机能保持很长一段时间.故选A.