Many chemical substances react________oxygen. A．onB．withC．againstD．to
题型：不详难度：来源：
| Many chemical substances react________oxygen. |
答案
| B |
解析
| 答案 B [考查短语。react to 对……产生反应；回应，对应； react vt.& vi.指物质起化学反应常与with连用。 react against sth/sb反对，反抗； react on/upon sb/sth 对……起作用，有影响。] |
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