【題目】讀某地區(qū)等高線地形圖,完成下列問題。
(1)地形部位名稱:A、B。
(2)有人認(rèn)為C處是一座火山,請你從圖中找出支持這種說法的依據(jù)。
(3)寫出圖中河流干流D的大致流向;本區(qū)的河流①②③④中,河水流速最快的是。
(4)從改善生態(tài)環(huán)境出發(fā),本區(qū)最適合大力發(fā)展的產(chǎn)業(yè)是。
A.畜牧業(yè)
B.種植業(yè)
C.漁業(yè)
D.林業(yè)
【答案】
(1)陡崖;鞍部
(2)C處為封閉等高線,中間高,四周低,應(yīng)為山地,但山頂中間部分海拔更低,可能為火山口
(3)自西北流向東南;③
(4)D
【解析】讀圖可知,(1)圖中A處為幾條海拔高度不同的等高線重合的部位,是陡崖;B處位于兩山頂之間相對低洼的部位,為鞍部。(2)從等高線地形圖看出,C處為封閉等高線,中間高,四周低,應(yīng)為山地,但山頂中間部分海拔更低,可能為火山口。(3)根據(jù)“上北下南,左西右東”判斷,圖中河流干流D的大致流向自西北流向東南;本區(qū)的河流①②③④中,③河流處等高線最密集,坡度最陡,水流速最快。(4)從改善生態(tài)環(huán)境出發(fā),本區(qū)地形崎嶇,海拔低于500米,為丘陵,最適合大力發(fā)展林業(yè);故選項D符合題意。所以答案是:(1)陡崖;鞍部;(2)C處為封閉等高線,中間高,四周低,應(yīng)為山地,但山頂中間部分海拔更低,可能為火山口;(3)自西北流向東南; ③;(4)D。
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