题目内容
在比较两样本均数的假设检验中,结果 t=3.24,P<0.05。正确的结论是 ( )
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抽样误差是由 ( )
胡同时最具北京特色的代表之一，它的两旁时居民房屋。它不仅是交通通道，更是普通百姓的生活场所。Hu tong , a type of narrow street or alley with houses on both sides is the ____ in Beijing. The hu tong is not only a _____but also the ____.
这里是喧闹的都市中，最为安静的角落。人们悠闲自得，和睦相处。It is the ____ in this noisy city. People get long with each other ____.
北京的胡同由800多年的历史。自古至今约由4000多条。随着时代的发展，胡同逐渐被高楼大厦取代。只有为数不多的胡同被保留下来，为繁华的北京保留了一抹古老的色彩。There ____ 4,000 hu tongs in Beijing with a history of more than 800 years. Many hu tongs _____ modern buildings as the city developed. Only a few of them have been ____ keeping the traditions and history of Beijing alive.
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