問題詳情
【題組】48.When plants use sunlight to make food, it is_____ .
(A) because they have started to turn brown.
(B) because their atoms have been destroyed.
(C) an example of a natural chemical reaction.
(D) very like the way a car engine burns oil.
參考答案
答案：C
難度：適中0.666667
統計：A(2),B(1),C(12),D(3),E(0)