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  3. [A] Over the past year, the prospective brain hypothesis has gained steady support among neuroscientists. An intriguing possibi

[A] Over the past year, the prospective brain hypothesis has gained steady support among neuroscientists. An intriguing possibi

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问题     [A]  Over the past year, the prospective brain hypothesis has gained steady support among neuroscientists. An intriguing possibility raised by the hypothesis is that the primary role of human memory may not be to remember the past, but to imagine and prepare for the future. "Once things in the past are finished, there’s nothing you can do about them," Levine says.
    [B]   Brian Levine, a neuroscientist at the University of Toronto in Canada, is convinced that the data show a real decline in personal future imaginings. "I think that methodologically they have ruled out the other possible explanations," Levine says. He adds that the findings are consistent with other studies examining future thinking in humans. "The more interesting question is ’why?’", he says.
    [C]   Old age does more than stealthily steal away our most cherished memories: it also seems to diminish our ability to imagine things. This finding, detailed in the January issue of the journal Psychological Science, supports the "prospective brain" hypothesis, the idea that imagining the future and remembering the past rely on the same neural machinery. One implication of this study is that imagining is quite closely related to, and dependent on, remembering, perhaps more so than we previously realized, Dan Schacter of Harvard University says.
    [D]  In the study, Schacter and his team asked groups of young and old participants, with average ages of 25 and 72, respectively, to recount a personal episode from their past or imagine a personal experience in their future in response to cue words. Details in the participants’ narratives were categorized as either "internal" or "external". Internal memories are similar to scenes from a movie: they contain specific subjects and take place in particular settings and time periods. External memories consist mostly of general facts about the world, such as "the sky is blue". As expected, results showed that the past accounts of the older participants’ tales contained fewer, and less detailed, internal memories than those of the younger group. This deficit also extended to their future imaginings.
    [E]  In contrast, an older participant’s response to the same cue word was: "The scene is I’m just driving along, in the Saab, and... not worrying about high energy costs..." It wasn’t that the older group had trouble speaking or spoke less, the researchers found. The older people scored normally on verbal tests, and they talked at length about non-personal external memories.
    [F]  A young participant asked to imagine a personal scene in response to the cue word "engine", for example, might envisage themselves driving in a red convertible along California’s Pacific Coast Highway one weekend over the summer. They might describe seagulls circling overhead, the feel of the wind mussing their hair, and the smell of the salt air as they round a particular comer.
    [G]  The researchers speculate that personal memories are particularly susceptible to ageing because they rely heavily on "relational processing", the ability to mentally summon and join unique pieces of information, such as where and when an experience occurred. Stitching the particulars of a scene together—be it real or imagined—gets more difficult with age.
    【D6】→【D7】→【D8】→【D9】→B→【D10】→A
【D8】
选项
答案F
解析 上一段(即D)末讲到研究的方式是让参与者叙述过去发生之事和根据提示词想象未来的场景，段末指出老年组的描述中包含较少内部记忆，并提到这情况同样发生在他们对未来事情的想象力上。可见下文应该会接着讲在对未来事情的想象方面的研究情况或结果。F结合具体例子说明年轻组在未来想象力方面的表现情况，符合上述推测，F跟D语义衔接得当。E虽然也是介绍参与者在未来想象力方面的表现，但In contrast，和the same cue word说明E之前应该先提及另一组参与者的情况，故不选。G解释老化使得记忆力和想象力衰退的原因，与D主题相去甚远，无法衔接。故本题答案为F。
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