問題詳情
9.宇宙中組成的物質主要以哪兩種元素為主?
(A)氧
(B)氫
(C)氮
(D)氦
(E)碳
(A)氧
(B)氫
(C)氮
(D)氦
(E)碳
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)
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