2. 外语
  3. In the search for truth, the knowledge gained by scientists consists of approximations with varying degrees of certainty. Such (

In the search for truth, the knowledge gained by scientists consists of approximations with varying degrees of certainty. Such (

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问题 In the search for truth, the knowledge gained by scientists consists of approximations with varying degrees of certainty. Such (i)________truth can be highly (ii)________, as the rapid and relatively steady progress of medical knowledge well exemplifies.
Blank (i)      Blank (ii)
A. unambiguous D. useful
B. esoteric    E. equivocal
C. provisional F. contentious
选项
答案C,D
解析 先看空格(i)，逻辑连接词是such，表示前文的指代重复。前句完整，句意是在追寻真理的路上，科学家获得的知识充斥着具有不同程度确定性的近似，所以这个truth的特点是approximations with varying degrees of certainty，因此空格(i)表达“不确定”的含义，排除A、B，选项C provisional最符合。再看空格(ii)，逻辑连接标志是逗号，表示前后同义重复。后句说医疗知识快速而相对稳定的进步就是很好的例子，显然是正评价，对应空格(ii)填正面词汇，排除E、F，选项D符合。provisional的英文释义：existing or accepted for the present time but likely to be changed.
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