We ____ Tom's age by getting his birth record.
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We'll go out as soon as I've ____ the kitchen.
For women lawyers in the United States, their ____ earnings are on the average much less than those of male lawyers.
I won't get involved in a deal like this - it's against all my ____.
下列说法中正确的是( )
A. 反应级数等于反应分子数
B. 具有简单级数的反应是基元反应
C. 不同反应若具有相同的级数形式,一定具有相同的反应机理
D. 反应级数不一定是简单的正整数