阿摩線上測驗
9. This gaseous _______ could combine with water to form acids such as sulphurious acid and sulphuric acid.
(A) Aluminium
(B) Silicon
(C) Sulphur dioxide
(D) Nitogen oxides
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統計： A(41), B(32), C(216), D(32), E(0) #3407837
統計： A(41), B(32), C(216), D(32), E(0) #3407837
