問題詳情
18.In his 19th century science fiction, Jules Verne depicted a civilization powered not by oxygen but by hydrogen - the lightest and most abundant _____ in the universe.
(A) substance
(B) specimen
(C) syllable
(D) statue
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)