2. 专升本
  3. Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned. The time necessary 【63】 this is 5 to 1

Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned. The time necessary 【63】 this is 5 to 1

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问题     Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned. The time necessary 【63】 this is 5 to 10 minutes. After a break of this period of time the memory will have 【64 】what has just been learnt, and more will be remembered. During this break. 【65】 is important to exercise the right side of the brain, 【66】 the left side is used during a learning period. 【67】 you should relax in some way. 【68】 music, breathing in fresh air, and 【69】 at a picture, are all ways of using 【70】 side of the brain.  
选项 A、this
B、it
C、that
D、such
答案B
解析 题中真正的主语是to exercise…，这个主语比较长，如果放在主语的位置，整个句子显得不平衡，因此将it这个形式主语放在主语的位置，真正的主语后置。
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