填空题

【参考答案】

attacks
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填空题
将affect改为effect。
单项选择题
A．The hydrochloric acid broke the carbon bonds in the carbon dioxide,B．The magnesium oxide broke the carbon oxygen bonds in the carbon dioxide.C．The burning magnesium broke the carbon oxygen bonds in the carbon dioxide.D．The gas collection method broke the carbon - oxygen bonds in the carbon dioxide.
A．The hydrochloric acid broke the carbon bonds in the carbon dioxide,
B．The magnesium oxide broke the carbon oxygen bonds in the carbon dioxide.
C．The burning magnesium broke the carbon oxygen bonds in the carbon dioxide.
D．The gas collection method broke the carbon - oxygen bonds in the carbon dioxide.
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