Dr. Berkman notes that the study fails to reveal______. A.what kind of work helps maintain cognitive functioning B.different effects of different kinds of work on memory C.the results of keeping doing demanding physical work D.the relationship between work and memory preserving
A.A.what B.different C.the D.the
【参考答案】
C 解析：题干中的Dr．Berkman notes为原文信息重现，the study fails to reve......