题目内容：
It is believed that too much __tothe sun is harmful to the skin. A. exposure B. expansion C. exhibition D. extension
参考答案：
选择题：It is believed that too much __tothe sun is harmfu
- 题目分类：西安交通大学-土木工程-英语
- 题目类型：选择题
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the sun is harmful to the skin. A. exposure B. expansion C. exhibition D. extension