As food is to the body, so is learning to the mind. Our bodies grow and muscles develop with the【C1】______of adequate nutritious

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问题    As food is to the body, so is learning to the mind. Our bodies grow and muscles develop with the【C1】______of adequate nutritious food. Likewise, we should keep learning day by day to maintain our keen mental power and expand our【C2】______capacity. Constant learning【C3】______us with inexhaustible fuel for driving us to sharpen our power of reasoning, analysis, and judgment. Learning incessantly is the surest way to keep【C4】______with the times in the information age, and an infallible【C5】______of success in times of uncertainty.
   Once learning stops, vegetation sets in. It is a common fallacy to regard school as the only workshop for the【C6】______of knowledge. On the contrary, learning should be a never-ending process, from the cradle to the【C7】______. With the world ever changing so fast, the cease from learning for just a few days will make a person lag behind. What’ s worse, the animalistic instinct dormant deep in our subconsciousness will come to life, weakening our will to【C8】______our noble ideal, sapping our determi nation to sweep away【C9】______to our success and strangling our desire for the refinement of our character. Lack of learning will inevitably lead to the stagnation of the mind, or even worse, its fossilization. Therefore, to stay mentally young, we have to take learning as a【C10】______career.
   A)grave B)supplies C)pursue D)pace
   E)acquisition F)difficult G)intake H)warrant
   I)decoration J)intellectual K)learn L)determination
   M)mental N)lifelong O)obstacles
【C9】

选项

答案O

解析 根据前面的sweep awayr及后面的success可知此处是说“把去往成功路上的……扫清”。因此应该是类似“阻碍,障碍”的词语,故选O。
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