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【題目】我國東南部人口稠密，西北部人口稀疏，其分界線大致是（ ）
A.漠河﹣騰沖
B.黑河﹣騰沖
C.800mm等降水量線
D.昆侖山﹣祁連山﹣橫斷山

【答案】B
【解析】自20世紀70年代初期我國大力推行計劃生育政策以來，全國大約少生了約4億人，人口過快增長的勢頭得到有效遏制．特別是近十年來，人口的出生率和自然增長率明顯下降．中國人口的地理分布以黑河﹣﹣﹣滕沖為地理分界線，東部地區(qū)人口多，西部地區(qū)人口少．具體表現(xiàn)為沿海、沿河、沿湖地區(qū)人口多，干旱荒漠地區(qū)人口少；平原、盆地人口多，山地、高原人口少；經濟和交通運輸發(fā)達的地區(qū)人口多，經濟落后、交通閉塞的地區(qū)人口少；城鎮(zhèn)密集、工業(yè)發(fā)達的地區(qū)人口多，偏僻的農業(yè)、牧業(yè)地區(qū)人口少；漢族地區(qū)人口多，大部分少數民族地區(qū)人口少．根據題意．故選：B．

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