Because John did not get enough exposure to sunlight, his test results showed that he was at the risk of vitamin D _______.
Adeficiency正確答案
Bsuperfluity
Cdegeneration
Dsufficiency
答案與詳解
deficiency 意為「缺乏、不足」,vitamin D deficiency 是醫學固定搭配,指維生素 D 缺乏症。題幹提到 John 曬太陽不夠,邏輯完全吻合。
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