题目

阅读下面短文，根据短文内容，补全表格中所缺的信息。每空最多填写三个单词。 In the big cities of Europe and America--London，Paris，New York，people are moving out of the city．They are usually families who have some money，and they want to live a quieter life．They are tired of the noises and the dirt of the city，tired of the crowded（拥挤的）streets，crowded trains and buses．They don't want to sit in traffic any more．They wall[a house with a garden，and clean air that is not polluted（污染）． So they move out．Some don't move very fa三棱锥中，平面，，则该三棱锥外接球的表面积为（ ）A． B． C． D．