题目内容
15.Astronomers have measured the distances between galaxies in the universe to anaccuracy (the state of being exact or correct) of just 1%.分析 天文学家已经把宇宙中星系之间的距离测量到1%的精度.
解答 答案是accuracy.考查单词填空.介词of前面用名词.根据题干给出的解释,可知用名词accuracy表示"精度,准确度".故答案是accuracy.
点评 本题考查用所给单词的适当形式填空.首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变动.
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