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As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can't remember(1)we put the keys just a moment ago, or an old acquaintance's name, or the name of an old band we used to love. As the brain(2), we refer to these occurrences as “senior moments.”(3)seemingly innocent, this loss of mental focus can potentially have a(n)(4)impact on our professional, social, and personal(5).

Neuroscientists, experts who study the nervous system, are increasingly showing that there's actually a lot that can be done. It (6)out that the brain needs exercise in much the same way our muscles do, and the right mental (7)can significantly improve our basic cognitive(8). Thinking is essentially a (9) of making connections in the brain. To a certain extent, our ability to (10) in making the connections that drive intelligence is inherited. (11), because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate (12)  mental effort.

Now, a new Web-based company has taken it a step (13) and developed the first “brain training program” designed to actually help people improve and regain their mental (14).

The Web-based program (15) you to systematically improve your memory and attention skills. The program keeps (16) of your progress and provides detailed feedback (17) your performance and improvement. Most importantly, it (18) modifies and enhances the games you play to (19) on the strengths you are developing—much like a(n) (20)  exercise routine requires you to increase resistance and vary your muscle use. 

问题1选项
A.why
B.when
C.that
D.where
问题2选项
A.improves
B.fades
C.collapses
D.recovers
问题3选项
A.While
B.Unless
C.Once
D.If
问题4选项
A.uneven
B.limited
C.damaging
D.obscure
问题5选项
A.relationship
B.environment
C.wellbeing
D.outlook
问题6选项
A.turns
B.finds
C.points
D.figures
问题7选项
A.responses
B.roundabouts
C.workouts
D.associations
问题8选项
A.genre
B.criterion
C.circumstances
D.functions
问题9选项
A.channel
B.process
C.sequence
D.condition
问题10选项
A.excel
B.feature
C.persist
D.believe
问题11选项
A.However
B.Moreover
C.Otherwise
D.Therefore
问题12选项
A.instead of
B.regardless of
C.apart from
D.according to
问题13选项
A.back
B.further
C.aside
D.around
问题14选项
A.framework
B.stability
C.sharpness
D.flexibility
问题15选项
A.hurries
B.reminds
C.forces
D.allows
问题16选项
A.order
B.track
C.hold
D.pace
问题17选项
A.to
B.on
C.for
D.with
问题18选项
A.constantly
B.habitually
C.irregularly
D.unusually
问题19选项
A.carry
B.put
C.build
D.take
问题20选项
A.risky
B.familiar
C.idle
D.effective
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