問題詳情
55 Ocean plastic can be broken into smaller pieces – known as microplastics-by sun exposure and wave
action, after which it can find its way into the food chain. When it eventually _____, the process releases chemicals that further contaminate the sea.
(A) downgrades
(B) centigrade
(C) degrades
(D) retrogrades
參考答案
答案：C
統計：A:0,B:1,C:3,D:2,E:0
難度：計算中