老年性痴呆的最突出的临床表现是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25679' and id < 2158702 and id<>'2158702' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25679' and id > 2158702 and id<>'2158702' order by id asc limit 5