题目

信息匹配（共5小题；每小题2分，满分10分） 请阅读下面应用文和相关信息，按照要求进行匹配，并在答题卡上将对应题号的相应选项字母涂黑。 （选 E 涂AB, 选 F 涂CD） 以下是旅游景点的信息： A. Agra Fort Near the gardens of the Taj Mahal stands the important 16th-century Mughal monument known as the Red Fort of Agra. This powerful fortress of red sandstone encompasses, within its 2.5-km-long enclosure walls, the imperial city of the Mughal rulers. It comprises many fairy-tale palaces, such as the Jahangir Palace and the Khas Ma用样本估计总体，下列说法正确的是（　　）A．样本的结果就是总体的结果B．样本容量越大，估计就越精确C．样本的标准差可以近似地反映总体的平均状态D．数据的方差越大，说明数据越稳定