問題詳情
【題組】47 According to the passage, what will happen during exposure to sunlight?
(A) Vitamin D will be produced.
(B) One’s bones will become soft.
(C) One’s skin will turn dark.
(D) The calcium level in the blood will decrease.
參考答案
答案：A
難度：適中0.666667
統計：A(2),B(1),C(0),D(0),E(0)