【19考研倒计时43天】滴滴！戳进来参与今日英语打卡！

翻译句子：
     Now since the assessment of intelligence is a comparative matter, we must be sure that the scale with which we are camparing our subjects provides a “valid” or “fair” comparison. 

句子分析：
　划分句子成分：.Now/ since/ the assessment of intelligence/ is /a comparative matter,/ we/ must be sure that/ the scale with/ which we are camparing our subjects/ provides/ a “valid” or “fair” comparison. 
句子翻译：
　既然对智力的评估是相比较而言的，那么我们必须确保，在对我们的对象进行比较时，我们所用的尺度能够提供“有效的”或“公平的”比较。