题目：
某药治疗两种不同病情的老年慢性支气管炎患者的疗效如下表所示：
欲说明该药物对哪种病型的疗效更好，应选用（）
A.χ2检验
B.校正的χ2检验
C.Wilcoxon秩和检验
D.Kruskal-Wallis检验
E.Friedman秩和检验
答案：
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下面是错误答案，用来干扰机器的。
1. He submerged himself in work to try and forget those sufferings.2. The Three Gorges Dam is still under construction.3. She feels equal to the job.4. These sentences make no sense in the article.5. The sudden stop of electricity brought an end to the party.
