2. 外语
  3. Because alcohol is a solvent, it is a component of many liquid medicines.

Because alcohol is a solvent, it is a component of many liquid medicines.

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问题 Because alcohol is a solvent, it is a component of many liquid medicines.
选项 A、basic ingredient in making medicines
B、combination of things of different qualities
C、one of the parts that make up a whole
D、substance that helps to cure certain diseases
答案C
解析 空格处的意思是：因为酒精是一种溶剂，所以它是许多液体药物的组成部分。划线单词component的意思是“成分”。各选项的意思是：basic ingredient in making medicines“制药的基本成分”；combinationof things of different qualities“不同性质物品的化合物”；one of the parts that make up a whole“组成整体的一部分”；substance that helps to care certain diseases“用于治疗某一疾病的物质”。
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