問題詳情

26.In chemistry class, the students _____ hydrogen (氫氣) with oxygen (氧氣) to form water.
(A) demanded
(B) combined
(C) generated
(D) promoted

參考答案

答案：B
難度：適中0.589041
統計：A(8),B(43),C(8),D(10),E(0)