2. 职称英语
  3. The moon, being much nearer to the Earth than the Sun, is the ______ cause of th

The moon, being much nearer to the Earth than the Sun, is the ______ cause of th

游客2023-11-13  14
问题 The moon, being much nearer to the Earth than the Sun, is the ______ cause of the tides. （2008年考试真题）
选项 A、principal
B、basic
C、initial
D、elementary
答案 A
解析 principal意为“主要的”，例如：My wages are the principal souse of my income．薪金是我收入的主要来源。正是月亮的运转引起涨潮和退潮，故A符合句意。basic意为“基础的”；initial意为“最初的”；elementary意为“基本的”，这三个词都没有体现出潮汐出现的主因是月亮运转这层含义，不符合常识，排除。
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