2. 外语
  3. This article is mainly about how to keep healthy through food and exercises. It may be easy to get vitamin D, since __________

This article is mainly about how to keep healthy through food and exercises. It may be easy to get vitamin D, since __________

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问题  This article is mainly about how to keep healthy through food and exercises.
It may be easy to get vitamin D, since __________ when your skin is exposed to the sun’s rays.
选项
答案Your body makes the vitamin。
解析 根据题干中的信息词vitamin D和skin定位到文章最后一句，可得答案。
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大学英语四级

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