問題詳情
9. The reasons for the Amazon rainforest fires have been __________by some environmentalresearchers. Human activity is the main cause of these Amazonian wildfires.
(A) deployed
(B) forfeited
(C) elucidated
(D) reprimanded
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增