2. 外语
  3. A balance used for weighing drugs or jewels must be a______instrument, but this would be quite unsuitable for weighing coal, san

A balance used for weighing drugs or jewels must be a______instrument, but this would be quite unsuitable for weighing coal, san

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问题 A balance used for weighing drugs or jewels must be a______instrument, but this would be quite unsuitable for weighing coal, sand or blocks of stone.
选项 A、distinction
B、correction
C、precaution
D、precision
答案D
解析 形容词词义辨析。balance为名词，意为“天平”，选项中的形容词只有precision(精确的)能与instrument(仪器)搭配。故答案为D。
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