問題詳情
【題組】22. According to the passage, in 1850 there were diseases because .
(A) the living conditions were poor
(B) people then didn’t believe in doctors
(C) there were no microbes in the milk
(D) milk was not made safe to drink
參考答案
答案：D
難度：適中0.4
統計：A(1),B(1),C(1),D(2),E(0)