Ascorbate readily oxidizes in aerated aqueous solutions, and the pH of such solutions, in part,________the rate of oxidation, si

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问题 Ascorbate readily oxidizes in aerated aqueous solutions, and the pH of such solutions, in part,________the rate of oxidation, since the higher the pH, the greater the rate of oxidation.
A. determines
B. accelerates
C. consolidates
D. governs
E. compounds
F. stabilizes

选项

答案A,D

解析 因果类题目,since引导原因。空格表示的是溶液的pH值怎么样了氧化速度,后面告诉我们pH值越高,氧化速度越快,所以空格填入一个表示“决定”的词,A、D两项符合。注意这个题目容易错选B。pH越高氧化速度越快,所以有的同学选了B项accelerates,但是如果pH值越低呢,就不一定了。
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