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  3. PASSAGE ONE [br] According to the scientists, what causes the common occurrence

PASSAGE ONE [br] According to the scientists, what causes the common occurrence

游客2023-10-22  64
问题 PASSAGE ONE [br] According to the scientists, what causes the common occurrence of rickets among children?
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答案 In sufficent exposure to natural sunshine and improper diet.
解析 第二段中提到：The disease is caused by chronic vitamin D deficiencies，which carl be triggered by long periods out of natural sunlight and a poor diet. 可见长时间日照不足、饮食不合理，会造成长期的维生素D缺乏，从而诱发佝偻病。
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