2. 外语
  3. A. ability B. access C. admired D. allowed E. basically F. consuming G. current H. hiding I. includes J. motivation

A. ability B. access C. admired D. allowed E. basically F. consuming G. current H. hiding I. includes J. motivation

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问题     A. ability   B. access  C. admired D. allowed  E. basically
    F. consuming G. current H. hiding  I. includes J. motivation
    K. obvious   L. passion M. premise N. value    O. wisely
    The phrase bird-brain may be used to describe someone being silly, but this is not the case for ravens.
    Long【C1】________for their intelligence, ravens are now known to be able to plan ahead, a skill previously thought to belong only to humans. Researchers learned ravens could remember key information for a future task through tests. Until now, some corvids—the family of birds that【C2】________ravens—have shown the【C3】________to plan beyond the present, for example by【C4】________food for later.
    But the latest experiments revealed that ravens can【C5】________forego an immediate reward in order to get a better one in the future. In one of the tests, ravens were trained to use a tool to open a puzzle box in order to【C6】________a reward. And then, the ravens were presented with a tool to open a box and an immediate reward, but were only【C7】________to choose one or the other. Ravens remembered that the reward in the box was better than the immediate reward, and almost all of them chose the tool.
    Ravens’【C8】________for planning is still unknown, but it may be similar to ours. The human brain stores memories of past events to guide decision-making about【C9】________and future events. Planning tends to come about when the higher【C10】________of a future reward is palpable, or when one imagines the happiness that will come by retrieving food in the future.
【C9】
选项
答案G
解析 空格前是介词about，又由空格后的连词and可知，空格处应填入一个与future语义场一致的形容词或起形容词作用的词共同修饰events，并作介词about的宾语。根据常识及本句中的past events和future events可知，此处是说人类大脑储存过去事件的记忆是为当前及未来事件提供决策指导，故G项current为答案。
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