一、阅读下文 ,完成 1— 5题。西部文化和西部开发①中国西部是什么概念 ?中国西部通常是指黄河与秦岭相连一线以西 ,包括我国西北和西南的 12个省市、自治区。这片广袤的土地面积为 5 46万平方公里 ,占国土总面积的 5 7% ;人口 2 .8亿 ,占全国总人口的 2 3%。②西部是华夏文明 First, read the following to complete the 1 - 5 questions. Western Culture and Western Development 1 What is the concept of western China? Western China usually refers to the west of the Yellow River connecting the Qinling Mountains to the west, including the 12 provinces and autonomous regions of China’s northwest and southwest. The vast land area is 54.60 million square kilometers, which accounts for 57% of the total land area; the population is 280 million, accounting for 23% of the country’s total population. 2 The West is the Chinese civilization