問題詳情

33 What led to the 1970s’ hypothesis that vitamin D might be helping to prevent MS?
(A)MS is rarer near the equator than it is at high latitudes.
(B)Those living in the tropics receive more sunlight than those in temperate zones.
(C)The follow-up experiments supported the notion.
(D)A particular sort of sunlight was discovered.

參考答案

答案:A
難度:非常困難0.142857
統計:A(2),B(5),C(4),D(3),E(0)

內容推薦