2. 考研
  3. Working memory，or short-term memory，involves the ability to hold and use information in the immediate future． (31) is only

Working memory，or short-term memory，involves the ability to hold and use information in the immediate future． (31) is only

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问题 Working memory，or short-term memory，involves the ability to hold and use information in the immediate future．    (31)    is only held in working memory for about 20 seconds．The challenge that students    (32)    is to move information from their working memories into their long-term memories．If they don’t do this in about the first few minutes after receiving the information，that information Can be lost．To keep this newly learned material from    (33)    away，it needs to enter the network of the brain’s wiring．
    After repeated practice，working memories are set down as permanent neuronal(神经的)circuits    (34)    to be activated(激活)when the information is needed．When a memory has been recalled    (35)    ，its neuronal circuits are more highly developed because of their repeated activation．
        (36)    exercising a muscle，these circuits then become more efficient and easier to access and activate．Practice results    (37)    repeated stimulation of the memory circuit．Like hikers along a path    (38)    eventually leave a depression in the road，repeated practice stimulates cells in the memory circuit such that the circuit is reinforced and becomes    (39)    ．This means it can be quickly turned from off to on，and switched    (40)    through a variety of cues coming in from the senses．
(40)
选项 A、over
B、back
C、off
D、on
答案A
解析 本题考查词组。switch over表示“转换、转向”，与句子中表达的“能尽快从感觉输入的线索中进行转换”的含义吻合，故本题选A。
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